An edition of Proceedings of the Khartoum Workshop on Arid Lands Management, the University of Khartoum--the United Nations University, 22-26 October 1978 (1979)

Proceedings of the Khartoum Workshop on Arid Lands Management, the University of Khartoum--the United Nations University, 22-26 October 1978

By Khartoum Workshop on Arid Lands Management (1978 University of Khartoum)