Title: Land, man, and sand
Subjects: Arid regions agriculture, Control, Desertification, United Nations Conference on Desertification (1977 : Nairobi, Kenya), United Nations Conference on Desertification (1977 : Nairobi, Kenya) http://id.loc.gov/authorities/names/n79089040, Deserts, United Nations Conference on Desertification (1977 : Nairobi, Kenya) (uri) http://id.loc.gov/authorities/names/n79089040 (uri) http://viaf.org/viaf/sourceID/LC|n79089040