The report of the Soil Conservation Committee

[Khartoum] : McCorquodale, 1944.
Umfang/Format: 174 p., [6] folded leaves of plates : ill., maps ; 25 cm.

Taking the waters : soil and water conservation among settling Beja nomads in Eastern Sudan

von Van Dijk, Johan Aad
Research series / African Studies Centre Leiden 4
Leiden : African Studies Centre, 1995.
Umfang/Format: XVI, 324 p. : ill., maps ; 24 cm.