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2by Bommer, D.F.R., FAO, Rome (Italy) eng, United Nations Conference on Desertification eng 29 Aug 1977 Nairobi (Kenya)
Published 1977Texto bibliotecaFAO IT -
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4by Dregne, H.E., FAO, Rome (Italy) eng, United Nations Conference on Desertification eng 29 Aug 1977 Nairobi (Kenya), Henning, D., Flohn, H., Kovda, V.A., United Nations Educational, Scientific and Cultural Organization, 75 - Paris (France) eng, World Meteorological Organization, Geneva (Switzerland) eng
Published 1977Texto bibliotecaFAO IT