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United Nations Environment Programme ,  [The State of the Environment 1976] ,  The State of the Environment 1976

United Nations Environment Programme ,  [Conference Report of the ‘GEF International Waters Science Conference 2012’ (IWSC 2012) : Setting the International Waters Science Agenda for the next Decade] ,  Conference Report of the ‘GEF International Waters Science Conference 2012’ (IWSC 2012) : Setting the International Waters Science Agenda for the next Decade

United Nations Environment Programme ,  [Environmental Guidelines for Sand and Gravel Extraction Projects - Environmental Management Guidelines, No. 20] ,  Environmental Guidelines for Sand and Gravel Extraction Projects - Environmental Management Guidelines, No. 20

United Nations Environment Programme ,  [Interactions of Biogeochemical Cycles in Aqueous Ecosystems Part 7] ,  Interactions of Biogeochemical Cycles in Aqueous Ecosystems Part 7

United Nations Environment Programme ,  Intergovernmental Oceanographic Commission ,  International Atomic Energy Agency ,  [Guidelines for Determining inputs of Inorganic Contaminants into Estuaries: Reference Methods for Marine Pollution Studies No. 41] ,  Guidelines for Determining inputs of Inorganic Contaminants into Estuaries: Reference Methods for Marine Pollution Studies No. 41

United Nations Educational, Scientific and Cultural Organization ,  United Nations Environment Programme ,  [The Impact of Large Water Projects on the Environment - Proceedings of an International Symposium] ,  The Impact of Large Water Projects on the Environment - Proceedings of an International Symposium