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The Devil they Knew: Chemical Documents Analysis of Industry Influence on PFAS Science Cover

The Devil they Knew: Chemical Documents Analysis of Industry Influence on PFAS Science

Open Access
|Jun 2023

References

  1. 1 Agency for Toxic Substances and Disease Registry. Toxicological profile for perfluoroalkyls; 2021. Accessed April 27, 2023. https://www.atsdr.cdc.gov/ToxProfiles/tp200.pdf.
  2. 2 Yamashita N, et al. Perfluorinated acids as novel chemical tracers of global circulation of ocean waters. Chemosphere. 2008; 70(7): 12471255. DOI: 10.1016/j.chemosphere.2007.07.079
  3. 3 Tao L, et al. Perfluorooctanesulfonate and related fluorochemicals in albatrosses, elephant seals, penguins, and polar skuas from the Southern Ocean. Environ Sci Technol. 2006; 40(24): 76427648. DOI: 10.1021/es061513u
  4. 4 Kwiatkowski CF AD, et al. Scientific basis for managing PFAS as a chemical class. Environ Sci Technol Lett. 2020 Aug 11; 7(8): 532543. DOI: 10.1021/acs.estlett.0c00255
  5. 5 Calafat AM, et al. Polyfluoroalkyl chemicals in the US population: data from the National Health and Nutrition Examination Survey (NHANES) 2003–2004 and comparisons with NHANES 1999–2000. Environ Health Perspect. 2007; 115(11): 15961602. DOI: 10.1289/ehp.10598
  6. 6 Bjerregaard-Olesen C, et al. Maternal serum concentrations of perfluoroalkyl acids in five international birth cohorts. Int J Hyg Environ Health. 2017; 220(2A): 8693. DOI: 10.1016/j.ijheh.2016.12.005
  7. 7 Padula AM, et al. Birth outcomes in relation to prenatal exposure to per- and polyfluoroalkyl substances and stress in the environmental influences on child health outcomes (ECHO) program. Environ Health Perspect. 2023; 131(3): 111. DOI: 10.1289/EHP10723
  8. 8 National Toxicology Program, et al. Monograph on immunotoxicity associated with exposure to perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS); 2016. http://ntp.niehs.nih.gov/ntp/ohat/pfoa_pfos/pfoa_pfosmonograph_508.pdf.
  9. 9 U.S. Environmental Protection Agency. PFAS master list of PFAS substances (Version 2); 2021. https://comptox.epa.gov/dashboard/chemical_lists/PFASMASTER.
  10. 10 U.S. Environmental Protection Agency Science Advisory Board (SAB). Review of EPA’s analyses to support EPA’s national primary drinking water rulemaking for PFAS FINAL REPORT; 2022. https://sab.epa.gov/ords/sab/f?p=100:18:16490947993:::RP,18:P18_ID:2601.
  11. 11 Rogers RD, et al. Advancing per- and polyfluoroalkyl substances (PFAS) research: an overview of ATSDR and NCEH activities and recommendations. J Expo Sci Environ Epidemiol. 2021; 31(6): 961971. DOI: 10.1038/s41370-021-00316-6
  12. 12 National Academies of Sciences, Engineering, and Medicine. Guidance on PFAS exposure, testing, and clinical follow-up; 2022. DOI: 10.17226/26156
  13. 13 Tepper LB. Teflon. N Engl J Med. 1962; 267(7): 349350. DOI: 10.1056/NEJM196208162670709
  14. 14 Chemours.com. Teflon™. Accessed November 20, 2020. https://www.teflon.com/en/news-events/history#:~:text=The%20first%20Teflon%E2%84%A2%20products,and%20product%20innovations%20quickly%20followed.
  15. 15 Bilott R. Exposure: Poisoned water, corporate greed, and one lawyer’s twenty-year battle against DuPont. Atria Books; 2020.
  16. 16 U.S. Environmental Protection Agency. EPA settles PFOA case against DuPont for largest environmental administrative penalty in agency history; 2005. https://www.epa.gov/enforcement/reference-news-release-epa-settles-pfoa-case-against-dupont-largest-environmental.
  17. 17 Environmental Working Group. For DuPont, $1B a year rides on teflon. https://www.ewg.org/news-insights/news/dupont-1b-year-rides-teflon.
  18. 18 Hogue C. U.S. class-action case targets nine PFAS makers. C&EN2018.
  19. 19 Hardwick et al. Hardwick v. 3M Company et al, No. 2:2018cv01185 – Document 166 (S.D. Ohio 2020). Justia. 2020. https://law.justia.com/cases/federal/district-courts/ohio/ohsdce/2:2018cv01185/217689/166/.
  20. 20 Fletcher T, et al. C8 probable link reports; 2012. http://www.c8sciencepanel.org/prob_link.html.
  21. 21 Frisbee SJ, et al. The C8 health project: design, methods, and participants. Environ Health Perspect. 2009; 117(12): 187382. DOI: 10.1289/ehp.0800379
  22. 22 Nair A. DuPont settles lawsuits over leak of chemical used to make Teflon. Reuters. February 13, 2017. https://www.reuters.com/article/us-du-pont-lawsuit-west-virginia/dupont-settles-lawsuits-over-leak-of-chemical-used-to-make-teflon-idUSKBN15S18U.
  23. 23 Johnson PI, et al. The Navigation Guide—evidence-based medicine meets environmental health: systematic review of human evidence for PFOA effects on fetal growth. Environ Health Perspect. 2014; 122(10): 10281039. DOI: 10.1289/ehp.1307893
  24. 24 National Toxicology Program. Systematic review of immunotoxicity associated with exposure to PFOA or PFOS; 2016. https://ntp.niehs.nih.gov/whatwestudy/assessments/noncancer/completed/pfoa/index.html.
  25. 25 Ding N. Perfluoroalkyl and polyfluoroalkyl substances and women’s health: A possible etiology for earlier menopause and accelerated reproductive aging; 2020. https://deepblue.lib.umich.edu/handle/2027.42/155094.
  26. 26 U.S. Environmental Protection Agency. Lifetime health advisories and health effects support documents for perfluorooctanoic acid and perfluorooctane sulfonate; 2016. May 25. https://www.govinfo.gov/content/pkg/FR-2016-05-25/pdf/2016-12361.pdf.
  27. 27 Steenland K, et al. Review: Evolution of evidence on PFOA and health following the assessments of the C8 Science Panel. Environ Int. 2020; 145: 112. DOI: 10.1016/j.envint.2020.106125
  28. 28 Fenton SE, et al. Per-and polyfluoroalkyl substance toxicity and human health review: Current state of knowledge and strategies for informing future research. Environ Toxicol Chem. 2020; 40(3): 606630. DOI: 10.1002/etc.4890
  29. 29 Walker B, et al. Teflon chemical harmful at smallest doses. Environmental Working Group. Accessed November 23, 2020. https://www.ewg.org/research/teflon-chemical-harmful-at-smallest-doses.
  30. 30 Pontius F. Regulation of perfluorooctanoic acid (PFOA) and perfluorooctane sulfonic acid (PFOS) in drinking water: A comprehensive review. Water. 2019; 11(2003): 127. DOI: 10.3390/w11102003
  31. 31 U. S. Environmental Protection Agency (EPA). Per- and Polyfluoroalkyl substances (PFAS): Proposed PFAS national primary drinking water regulation. Accessed April 27, 2023. https://www.epa.gov/sdwa/and-polyfluoroalkyl-substances-pfas.
  32. 32 Ross D. Rainwater in parts of US contains high levels of PFAS chemical, says study. The Guardian. Dec 17. https://www.theguardian.com/environment/2019/dec/17/rainwater-pfas-us-potentially-toxic-levels-study.
  33. 33 Evans S, et al. PFAS contamination of drinking water far more prevalent than previously reported; 2020. Jan 22. https://www.ewg.org/research/national-pfas-testing/.
  34. 34 Grandjean P, et al. Immunotoxicity of perfluorinated alkylates: calculation of benchmark doses based on serum concentrations in children. Environ Health. 2013; 12(1): 17. DOI: 10.1186/1476-069X-12-35
  35. 35 U.S. Environmental Protection Agency. Addition of certain PFAS to the TRI by the National Defense Authorization Act. United States Environmental Protection Agency. Accessed November 20 2020. https://www.epa.gov/toxics-release-inventory-tri-program/addition-certain-pfas-tri-national-defense-authorization-act.
  36. 36 Cotruvo JA, et al. EPA’s unprecedented interim drinking water health advisories for PFOA and PFOS. Groundwater. 2023; 13. DOI: 10.1111/gwat.13303
  37. 37 White J, et al. Corporate manipulation of research: Strategies are similar across five industries. Stan L & Pol’y Rev. 2010; 28(1): 12.
  38. 38 Hendlin YH, et al. The pharmaceuticalization of the tobacco industry. Ann Intern Med. 2017; 167(4): 278280. DOI: 10.7326/M17-0759
  39. 39 Apollonio DE, et al. The creation of industry front groups: the tobacco industry and “get government off our back”. Am J Public Health. 2007; 97(3): 41927. DOI: 10.2105/AJPH.2005.081117
  40. 40 Bero L. Implications of the tobacco industry documents for public health and policy. Annu Rev Public Health. 2003; 24: 26788. DOI: 10.1146/annurev.publhealth.24.100901.140813
  41. 41 Wiist WH. The corporate play book, health, and democracy: the snack food and beverage industry’s tactics in context. Sick societies: Responding to the global challenge of chronic disease. 2011; 204216.
  42. 42 Michaels D. The triumph of doubt: dark money and the science of deception. Oxford University Press; 2020.
  43. 43 Buse K, et al. Healthy people and healthy profits? Elaborating a conceptual framework for governing the commercial determinants of non-communicable diseases and identifying options for reducing risk exposure. Globalization and health. 2017; 13(1): 112. DOI: 10.1186/s12992-017-0255-3
  44. 44 Kickbusch I, et al. The commercial determinants of health. The Lancet Global Health. 2016; 4(12): e895e896. DOI: 10.1016/S2214-109X(16)30217-0
  45. 45 Lee K, et al. Understanding structure and agency as commercial determinants of health: Comment on” How neoliberalism is shaping the supply of unhealthy commodities and what this means for NCD prevention”. International Journal of Health Policy and Management. 2020; 9(7): 315318. DOI: 10.15171/ijhpm.2019.127
  46. 46 UCSF Library. Industry documents library: About. University of California. https://www.industrydocuments.ucsf.edu/about/overview/.
  47. 47 Malone RE, et al. Tobacco industry documents: Treasure trove or quagmire? Tob Control. 2000; 9(3): 334338. DOI: 10.1136/tc.9.3.334
  48. 48 Bero LA. Tobacco industry manipulation of research. Public Health Rep. 2005; 120(2): 2008. DOI: 10.1177/003335490512000215
  49. 49 Hastings G, et al. A day in the life of an advertising man: Review of internal documents from the UK tobacco industry’s principal advertising agencies. BMJ. 2000; 321(7257): 366371. DOI: 10.1136/bmj.321.7257.366
  50. 50 O’Sullivan B, et al. Eyes on the prize: Transnational tobacco companies in China 1976–1997. Tob Control. 2000; 9(3): 292302. DOI: 10.1136/tc.9.3.292
  51. 51 Soechtig S, et al. The devil we know; 2018.
  52. 52 Fabbri A, et al. The influence of industry sponsorship on the research agenda: A scoping review. Am J Public Health. 2018; 108(11): e9e16. DOI: 10.2105/AJPH.2018.304677
  53. 53 Lau C, et al. Perfluoroalkyl acids: A review of monitoring and toxicological findings. Toxicol Sci. 2007; 99(2): 366394. DOI: 10.1093/toxsci/kfm128
  54. 54 Harris DK. Some hazards in the manufacture and use of plastics. Occup Environ Med. 1959; 16(3): 221229. DOI: 10.1136/oem.16.3.221
  55. 55 Kóster A, et al. Toxisches Lungenödem durch Teflondämpfe [Toxic pulmonary edema due to teflon vapors]. German. Wien Med Wochenschr. 1978; 128(14).
  56. 56 Sherwood RJ. The hazards of Fluon (Polytetrafluoroethylene). Occup Med. 1955; 5(1): 1012. DOI: 10.1093/occmed/5.1.10
  57. 57 Lewis CE, et al. An epidemic of polymer-fume fever. JAMA. 1965; 191(5): 375378. DOI: 10.1001/jama.1965.03080050021005
  58. 58 Robbins J, et al. Pulmonary edema from Teflon fumes. N Engl J Med. 1964; 271: 360361. DOI: 10.1056/NEJM196408132710708
  59. 59 Mack GJ. Toxicity of decomposition products of “Teflon”. Can Med Assoc J. 1961; 85(17): 955955. https://pubmed.ncbi.nlm.nih.gov/20326927/.
  60. 60 Mastromatteo E. Toxicity of decomposition products of “Teflon”. Can Med Assoc J. 1961; 85(25): 13571357. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1848628/.
  61. 61 Zapp, JA Jr.. Toxic and health effects of plastics and resins. Archives of Environmental Health: An International Journal. 1962; 4(3): 335346. DOI: 10.1080/00039896.1962.10663162
  62. 62 Mack GJ. Toxicity of decomposition products of “Teflon”. Can Med Assoc J. 1961; 85(25): 13581358. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1848625/.
  63. 63 Abbey DR. Toxicity of decomposition products of “Teflon”. Can Med Assoc J. 1961; 85(25): 13571358. PMC1848634. https://pubmed.ncbi.nlm.nih.gov/20326977/.
  64. 64 Griffith FD, et al. Exposure of Japanese quail and parakeets to the pyrolysis products of fry pans coated with Teflon® and common cooking oils. Am Ind Hyg Assoc J. 1973; 34(4): 176178. DOI: 10.1080/0002889738506828
  65. 65 DuPont™ Teflon® nonstick coating systems: still making history after half a century of leadership. DuPont EMEA Media Center; 2011. https://us.vocuspr.com/Newsroom/MultiQuery.aspx?SiteName=DupontEMEA&Entity=PRAsset&SF_PRAsset_PRAssetID_EQ=119529&XSL=NewsRelease&IncludeChildren=True&Lang=English.
  66. 66 Ubel F, et al. Health status of plant workers exposed to fluorochemicals – a preliminary report. Am Ind Hyg Assoc J. 1980; 41(8): 584589. DOI: 10.1080/15298668091425310
  67. 67 Griffith F, et al. Animal toxicity studies with ammonium perfluorooctanoate. Am Ind Hyg Assoc. 1980; 41: 576583. DOI: 10.1080/15298668091425301
  68. 68 Kennedy G. Dermal toxicity of ammonium perfluorooctanoate. Toxicol Appl Pharmacol. 1985; 81: 348355. DOI: 10.1016/0041-008X(85)90172-3
  69. 69 Kennedy G, et al. Inhalation toxicity of ammonium perfluoroctanoate. Food Chem Toxic. 1986; 24: 13251329. DOI: 10.1016/0278-6915(86)90066-9
  70. 70 Pastoor T, et al. Biochemical and morphological studies of ammonium perfluorooctanoate-induced hepatomegaly and peroxisome proliferation. Exp Mol Pathol. 1987; 47: 98109. DOI: 10.1016/0014-4800(87)90011-6
  71. 71 Van Rafelghem M, et al. Patholgoical and hepatic ultrastructural effects of a single dose of perfluoro-n-decanoic acid in the rat, hamster, mouse and guinea pig. Fundam Appl Toxicol. 1987; 9522540. DOI: 10.1093/toxsci/9.3.522
  72. 72 Takagi A, et al. Short-term exposure to the peroxisome proliferators, perfluoooctanoic acid and perfluorodecanoic acid, causes significant increases of X-hydroxydeoxyguanosine in liver DNA of rats. Cancer Lett. 1991; 57: 5560. DOI: 10.1016/0304-3835(91)90063-N
  73. 73 Just W, et al. Biochemical effects and zonal heterogeneity of peroxisome proliferation induced by perfluorocarboxylic acids in rat liver. Hepatology. 1989; 957058. DOI: 10.1002/hep.1840090411
  74. 74 Keller B, et al. Several nongenotoxic carcinogens uncouple mitochondria1 oxidative phosphorylation. Biochim Biophys Acta. 1992; 102: 237244. DOI: 10.1016/0005-2728(92)90105-B
  75. 75 Haughom B, et al. The mechanism underlying the hypolipemic effect of perfluorooctanoic acid (PFOA), perfluorooctane sulphonic acid (PFOSA) and clofibric acid. Biochim Biophys Acta. 1992; 128: 6512. DOI: 10.1016/0005-2760(92)90258-W
  76. 76 Sohlenius K, et al. The effects of perfluoro-octanoic acid on hepatic peroxisome proliferation and related parameters show no sex-related differences in mice. Biochem Toxicol. 1992; 285: 779783. DOI: 10.1042/bj2850779
  77. 77 Ylinen M, et al. Disposition of perfluorooctanoic acid in the rat after single and subchronic administration. Bull Environ Contam Toxicol. 1990; 44: 4653. DOI: 10.1007/BF01702360
  78. 78 Gilliland F, et al. Mortality among employees in a PFOA production plant. J Occup Med. 1993; 35: 950954. DOI: 10.1097/00043764-199309000-00020
  79. 79 Gilliland FD, et al. Serum perfluorooctanoic acid and hepatic enzymes, lipoproteins, and cholesterol: A study of occupationally exposed men. Am J Ind Med. 1996; 29(5): 560568. DOI: 10.1002/(SICI)1097-0274(199605)29:5<;560::AID-AJIM17>3.0.CO;2-Z
  80. 80 Lau C, et al. Exposure to perfluorooctane sulfonate during pregnancy in rat and mouse. II: postnatal evaluation. Toxicol Sci. 2003; 74(2): 38292. DOI: 10.1093/toxsci/kfg122
  81. 81 Thibodeaux JR, et al. Exposure to perfluorooctane sulfonate during pregnancy in rat and mouse. I: maternal and prenatal evaluations. Toxicol Sci. 2003; 74(2): 36981. DOI: 10.1093/toxsci/kfg121
  82. 82 Lau C, et al. The developmental toxicity of perfluoroalkyl acids and their derivatives. Toxicology and applied pharmacology. 2004; 198(2): 231241. DOI: 10.1016/j.taap.2003.11.031
  83. 83 3M Company. Environmental and health assessment of perfluorooctanesulfonate and its salts. US EPA Administrative Record. AR-226-1486; 2003.
  84. 84 3M Company. A 28-day oral (gavage) toxicity study of T-7485 in Sprague-Dawley rats Study no. 132-007; 2005.
  85. 85 DuPont. Epidemiology surveillance report: Cancer incidence for Washington Works site 1959–2001. US EPA Administrative Record, AR-226-1307-6; 2003.
  86. 86 DuPont de Nemours, et al. Ammonium Perfluorooctanoate: Phase II. Retrospective cohort mortality analyses related to a serum biomarker of exposure in a polymer production plant. Report No 8EHQ-0381-0394. 2007; EPA National Libary Catalog. https://cfpub.epa.gov/ols/catalog/advanced_full_record.cfm?&FIELD1=SUBJECT&INPUT1=Polymer&TYPE1=EXACT&LOGIC1=AND&COLL=&SORT_TYPE=MTIC&item_count=10.
  87. 87 Bower W. C8 exposure – medical surveillance; 1978. (yypw0228). https://www.industrydocuments.ucsf.edu/docs/yypw0228.
  88. 88 Fayerweather WE. Liver study of Washington Works employees exposed to C8: Results of blood biochemistry testing; 1981. (hypw0228). https://www.industrydocuments.ucsf.edu/docs/hypw0228.
  89. 89 Arenson G. Toxicity of Teflon dispersing agents; 1961. (snpw0228). https://www.industrydocuments.ucsf.edu/docs/#id=snpw0228.
  90. 90 Hilton W, et al. Request for toxicological information – “Teflon” division chemicals; 1970.(knpw0228). https://www.industrydocuments.ucsf.edu/docs/#id=knpw0228.
  91. 91 Snyder S, et al. Haskell Laboratory Report on Apfo/C8. PFAS Collection, UCSF Industry Documents Library; 1979. (hppw0228). https://www.industrydocuments.ucsf.edu/docs/hppw0228.
  92. 92 DuPont. C-8 blood sampling results; 1981. (xnpw0228). https://www.industrydocuments.ucsf.edu/docs/#id=xnpw0228.
  93. 93 Raines J, et al. Ammonium Perfluorooctanoate – C8 – rangefinder Study; 1981. (nnpw0228). https://www.industrydocuments.ucsf.edu/docs/#id=nnpw0228.
  94. 94 Smith H. Agenda: C8 review April 26, 1990; 1990. (xypw0228). https://www.industrydocuments.ucsf.edu/docs/#id=xypw0228.
  95. 95 Boone S, et al. C8 Ammonium Perfluorooctanoate Fluorosurfactant strategies and plans; 1994.(typw0228). https://www.industrydocuments.ucsf.edu/docs/#id=typw0228.
  96. 96 Steiner C. C8 communications meeting – outline, talk and charts; 1980. (nypw0228). https://www.industrydocuments.ucsf.edu/docs/#id=nypw0228.
  97. 97 Ingalls R, et al. C8 Perfluorooctonate – employee communication package; 1981. (kypw0228). https://www.industrydocuments.ucsf.edu/docs/#id=kypw0228.
  98. 98 Eaton M, et al. Standby press release – public notification C8; 1991. (rypw0228). https://www.industrydocuments.ucsf.edu/docs/#id=rypw0228.
  99. 99 Reilly B. Email from Bernard J Reilly re: lawyer for farmer going to the press to settle; 2000. (lypw0228). https://www.industrydocuments.ucsf.edu/docs/#id=lypw0228.
  100. 100 Stalnecker S, et al. Urgent email re: EPA; 2006. (jppw0228). https://www.industrydocuments.ucsf.edu/docs/#id=jppw0228.
  101. 101 DuPont. C8 background sheet; 1991. (yppw0228). https://www.industrydocuments.ucsf.edu/docs/#id=yppw0228.
  102. 102 Cox JM. Letter to Lubeck Public Service District customers re: the annual water quality report on July 1, 2000. PFAS Collection, UCSF Industry Documents Library; 2000. (qnpw0228). https://www.industrydocuments.ucsf.edu/docs/#id=qnpw0228.
  103. 103 E.I. du Pont de Nemours & Company.. Haskell Laboratory for Toxicology and Industrial Medicine Records. Archival Collections at Hagley Museum & Library Accession: 2739, 1930–2013. https://hagley-aspace-pdf.s3.amazonaws.com/2739.pdf.
  104. 104 DuPont. DuPont Haskell Lab document w C8 molecule chain. PFAS Collection, UCSF Industry Documents Library; 1988. (mppw0228). https://www.industrydocuments.ucsf.edu/docs/#id=mppw0228.
  105. 105 Reilly B. Email from Bernard J Reilly re: 3M announcment; 2000.
  106. 106 Wilson MP, et al. Toward a new US chemicals policy: rebuilding the foundation to advance new science, green chemistry, and environmental health. Environ Health Perspect. 2009; 117(8): 12021209. DOI: 10.1289/ehp.0800404
  107. 107 Vogel SA, et al. Why the toxic substances control act needs an overhaul, and how to strengthen oversight of chemicals in the interim. Health Aff (Millwood). 2011; 30(5): 898905. DOI: 10.1377/hlthaff.2011.0211
  108. 108 Silbergeld EK, et al. Regulating chemicals: law, science, and the unbearable burdens of regulation. Annu Rev Public Health. 2015; 36: 175191. DOI: 10.1146/annurev-publhealth-031914-122654
  109. 109 Richter L, et al. Producing ignorance through regulatory structure: The case of per-and polyfluoroalkyl substances (PFAS). Sociological Perspectives. 2020; 64(4): 631656. DOI: 10.1177/0731121420964827
  110. 110 Michaels D. Doubt is their product: How industry’s assult on science threatens your health. 1st ed. Oxford University Press; 2008.
  111. 111 International Network for Epidemiology in Policy. Conflict-of-Interest and Disclosure in Epidemiology; 2020. https://epidemiologyinpolicy.org/coi-d-position-statement.
  112. 112 Bero L. Ten tips for spotting industry involvement in science policy. Tob Control. 2019; 28(1): 12. DOI: 10.1136/tobaccocontrol-2018-054386
DOI: https://doi.org/10.5334/aogh.4013 | Journal eISSN: 2214-9996
Language: English
Submitted on: Nov 10, 2022
Accepted on: Apr 23, 2023
Published on: Jun 1, 2023
Published by: Ubiquity Press
In partnership with: Paradigm Publishing Services
Publication frequency: 1 issue per year

© 2023 Nadia Gaber, Lisa Bero, Tracey J. Woodruff, published by Ubiquity Press
This work is licensed under the Creative Commons Attribution 4.0 License.