DOI: https://doi.org/10.3402/tellusa.v6i2.8725 | Journal eISSN: 3035-9554
Language: English
Page range: 170 - 176
Published on: Jan 1, 1954
Published by: Stockholm University Press
In partnership with: Paradigm Publishing Services
© 1954 J. Van Mieghem, published by Stockholm University Press
This work is licensed under the Creative Commons Attribution 4.0 License.