DOI: https://doi.org/10.3402/tellusa.v16i1.8886 | Journal eISSN: 3035-9554
Language: English
Page range: 55 - 63
Published on: Jan 1, 1964
Published by: Stockholm University Press
In partnership with: Paradigm Publishing Services
© 1964 Abraham H. Oort, published by Stockholm University Press
This work is licensed under the Creative Commons Attribution 4.0 License.