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United Nations Environment Programme ,  World Meteorological Organization ,  World Climate Data and Monitoring Programme ,  [The Global Climate System: Climate System Monitoring December 1988-May 1991] ,  The Global Climate System: Climate System Monitoring December 1988-May 1991

Housrnan, Robert ,  [Reconciling Trade and the Environment: Lessons from the North American Free Trade Agreement - Environment and Trade 3] ,  Reconciling Trade and the Environment: Lessons from the North American Free Trade Agreement - Environment and Trade 3

United Nations Educational, Scientific and Cultural Organization ,  United Nations Environment Programme ,  Food and Agriculture Organization of the United Nations ,  [Tropical Forest Ecosystems: A State-of-Knowledge Report - Natural Resources Research XIV] ,  Tropical Forest Ecosystems: A State-of-Knowledge Report - Natural Resources Research XIV

United Nations Environment Programme ,  Center for International Environmental Law ,  [UNEP Compendium on Human Rights and the Environment: Selected international legal materials and cases] ,  UNEP Compendium on Human Rights and the Environment: Selected international legal materials and cases