机译:World soil erosion and conservation, edited by D. Pimentel. Cambridge University Press, Cambridge, 1993. ISBN 0 521 41967 0, £55.00 (hardback), xii + 349 pp
机译:More people, less erosion: Environmental recovery in Kenya, M. Tiffen, M. Mortimore and F. Gichuki. Wiley, Chichester, 1993. ISBN 0 471 941 433, £22.50 (paperback), xii + 311 pp
机译:Range ecology at disequilibrium: New models of natural variability and pastoral adaptation in African Savannas, edited by R. H. Behnke, I. Scoones and C. Kerven. ODI and IIED, London, 1993. ISBN 0 85003 195 8, £18.50 (paperback), xi + 248 pp