DOI: https://doi.org/10.3402/tellusa.v4i1.8665 | Journal eISSN: 3035-9554
Language: English
Page range: 68 - 70
Published on: Jan 1, 1952
Published by: Stockholm University Press
In partnership with: Paradigm Publishing Services
© 1952 J. van Mieghem, published by Stockholm University Press
This work is licensed under the Creative Commons Attribution 4.0 License.