TY - BOOK AU - Johnson,Douglas L. AU - Lewis,Laurence A. TI - Land degradation : creation and destruction / T2 - The Natural environment, SN - 0631192441 U1 - 333.73137 PY - 1995/// CY - Oxford : PB - Blackwell Publishers , KW - LAND DEGRADATION-ENVIRONMENTAL ASPECTS N1 - NULL ER -