TY - BOOK AU - Rapp, A (Ed.) AU - Houerou, H N Le (Ed.) AU - Lundholm, B (Ed.) TI - Can desert encroachment be stopped?: a study with emphasis on Africa U1 - 631.586 21st PY - 1976/// CY - Stockholm PB - Swedish Natural Science Research Council KW - Desert-Africa; Desertification-Control-Africa; Desert reclamation-Africa ER -