The Encroaching Sahara: The Threat to the West African Colonies: Discussion
| Autor: | Cox, Percy, Hemmant, G., Oliphant, F. M., Troup, R. S., Hill, Arthur, Stebbing, E. P. |
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| Zdroj: | The Geographical Journal, 1935 Jun 01. 85(6), 519-524. |
| Databáze: | JSTOR Journals |
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