1. A global inventory of agroforestry systems;Anonymous;Biomass,1983
2. Irrigated Forestry in Arid and Semi-arid Lands: A synthesis;Armitage,1987
3. The arid zone;Baumer,1985
4. A strategy on the role of forestry in combating desertification;Ben Salem,1988
5. Arid and Semiarid Rangelands: Guidelines for development;Child,1987