TY - BOOK AU - UNITED NATIONS EDUCATIONAL, SCIENTIFIC AND CULTURAL ORGANIZATION ED - UNITED NATIONS EDUCATIONAL, SCIENTIFIC AND CULTURAL ORGANIZATION TI - Case studies on desertification ed by J. A. Mabutt and C. Floret T2 - Natural resources research XVIII SN - 9231018205 U1 - G95121:7.1, M0 PY - 1980/// CY - Paris PB - UNESCO France KW - BIOLOGY ER -