References
- 1. Irby, R. M., Jr., and Harlow, E. S.: Tobacco Science 3 (1959) 52.
- 2. WUliamson, J. T., and Allman, D. R.: CORESTA Information Bulletin 1964-1, 7; Beitr. Tabakforsch. 2 (1964) 263.
- 3. WUliamson, J. T., Graham, J. F., and Allman, D. R.: Beitr. Tabakforsch. 3 (1965) 233.
- 4. Newsome, J. R., Norman, V., and Keith, C. H.: Tobacco Science 9 (1965) 102.
- 5. Waltz, P., and Hausermann, M.: Beitr. Tabakforsch. 3 (1965) 169.
- 6. Spears, A.: Tobacco Science 7 (1963) 76.
- 7. Hoffmann, D., and Wynder, E. L.: J. Nat. Cancer Inst. 30 (1963) 67; Beitr. Tabakforsch. 2 (1963) ,51.
- 8. Davis, H., and George, W.: Beitr. Tabakforsch .. 3 (1965) 203.
- 9. Lipp, G.: Beitr. Tabakforsch. 3 (1965) 109.
- 10. Newsome, J. R., Norman, V., and Keith, C. H.: Smoking machines for the analysis of the vapor phase of tobacco smoke, paper presented at the 19th Tobacco Chemists' Research Conference, Lexington, Ky., October 1965.
- 11. George, W ., and Keith, . C. H. : The selective filtration of tobacco smoke, unpublished mss.