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United Nations Environment Programme ,  [Dryland Management: The "Desertification" Problem - Environment Department Working Paper Number 8] ,  Dryland Management: The "Desertification" Problem - Environment Department Working Paper Number 8

United Nations Environment Programme ,  [A Survey of Geographic Information System and Image Processing Software - 1993] ,  A Survey of Geographic Information System and Image Processing Software - 1993

Justice, C.O. ,  Townshend, J.R.G. ,  Holden, B.N. ,  Tucker, C.J. ,  [Analysis of the Phenology of Global Vegetation using Meteorological Satelite Data] ,  Analysis of the Phenology of Global Vegetation using Meteorological Satelite Data

United Nations Environment Programme ,  Intergovernmental Oceanographic Commission ,  World Meteorological Organization ,  [Consulta de Expertos Sobre el Proyecto Conjunto Coordinado Relativo a Ia Contaminacion en el Mediterraneo: Informe Resumido de Ia Reunion Celebrada] ,  Consulta de Expertos Sobre el Proyecto Conjunto Coordinado Relativo a Ia Contaminacion en el Mediterraneo: Informe Resumido de Ia Reunion Celebrada