631.586
R823C
           Rapp, A (Ed.)
               Can desert encroachment be stopped? a study with emphasis on Africa \ A Rapp - Stockholm : Swedish Natural Science Research Council, 1976.
               241p.:ill+tab - Ecological bulletins; no. 24 .
108338
                Subjects: Desert-Africa; Desertification-Control-Africa; Desert reclamation-Africa.