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United Nations Environment Programme ,  [Report on the First HEM Programme and Technical Advisory Group (PTAG) Meeting - GEMS Report Series No. 15] ,  Report on the First HEM Programme and Technical Advisory Group (PTAG) Meeting - GEMS Report Series No. 15

United Nations Environment Programme ,  World Meteorological Organization ,  United Nations Educational, Scientific and Cultural Organization ,  Food and Agriculture Organization of the United Nations ,  Intergovernmental Oceanographic Commission ,  International Council of Scientific Unions ,  [Climate Change: Science, Impacts and Policy - Proceedings of the Second World Climate Conference] ,  Climate Change: Science, Impacts and Policy - Proceedings of the Second World Climate Conference

United Nations Environment Programme ,  Institute of Water Management of the Ministry of Environmental Protection and Water Management of the German Democratic Republic ,  [Eutrosym '76: Proceedings the International Symposium on Eutrophication and Rehabilitation of Surface Water Vol. I, Part 2] ,  Eutrosym '76: Proceedings the International Symposium on Eutrophication and Rehabilitation of Surface Water Vol. I, Part 2