Can Desert Encroachment be Stopped? Edited by A. Rapp, H. N. Le Houérou & B. Lundholm. (Ecological Bulletin No. 24.) Swedish Natural Science Research Council, Stockholm: 241 pp., 16.4 × 24.2 × 1.3 cm, stiff paper covers [no price indicated], 1976.
1982 ◽
Vol 22
(9)
◽
pp. 675-676
1987 ◽
pp. 345-350
◽
1977 ◽
Vol 8
(3)
◽
pp. 238-239
◽