DOI: https://doi.org/10.3402/tellusa.v9i2.9084 | Journal eISSN: 3035-9554
Language: English
Page range: 229 - 233
Published on: Jan 1, 1957
Published by: Stockholm University Press
In partnership with: Paradigm Publishing Services
© 1957 N. G. Jerlov, published by Stockholm University Press
This work is licensed under the Creative Commons Attribution 4.0 License.