North and South in Sudan, a Study in Human Contrasts

Autor:	Barbour, K. M.
Zdroj:	Annals of the Association of American Geographers, 1964 Jun 01. 54(2), 209-226.
Databáze:	JSTOR Journals
Externí odkaz:	https://www.jstor.org/stable/2561305 Zobrazit plný text záznamu