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United Nations Environment Programme ,  [The Global Environment Monitoring System: Selected Works on Integrated Monitoring - GEMS/PAC Information Series 2] ,  The Global Environment Monitoring System: Selected Works on Integrated Monitoring - GEMS/PAC Information Series 2

United Nations Environment Programme ,  [The Global Environment Monitoring System: Selected Works on Ecological Monitoring of Arid Areas - GEMS/PAC Information Series No. 1] ,  The Global Environment Monitoring System: Selected Works on Ecological Monitoring of Arid Areas - GEMS/PAC Information Series No. 1

United Nations Environment Programme ,  Frankfurt School-UNEP Centre ,  [Global Trends in Renewable Energy Investment 2019] ,  Global Trends in Renewable Energy Investment 2019

United Nations Environment Programme ,  International Resource Panel ,  [Resource Efficiency: Potential and Economic Implications - International Resource Panel Report] ,  Resource Efficiency: Potential and Economic Implications - International Resource Panel Report

United Nations Environment Programme ,  [El Estado Del Medio Ambiente 1981: Temas Seleccionados] ,  [L'Etat de L'environnement 1981: Selection de Sujets] ,  L'Etat de L'environnement 1981: Selection de Sujets

United Nations Environment Programme ,  International Resource Panel ,  [Resource efficiency: Potential and economic implications: Summary for Policy-Makers] ,  Resource efficiency: Potential and economic implications: Summary for Policy-Makers