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United Nations Environment Programme ,  [Industry and Environment Emission Standards and Guidelines Information Clearinghouse (IE-ESGIC) Volume IIIb: Iron & Steel Industry Air Emission Standards] ,  Industry and Environment Emission Standards and Guidelines Information Clearinghouse (IE-ESGIC) Volume IIIb: Iron & Steel Industry Air Emission Standards

United Nations Environment Programme ,  [Industry and Environment Emission Standards and Guidelines Information Clearinghouse (IE-ESGIC) Volume IIIa: Iron & Steel Industry Air Emission Standards] ,  Industry and Environment Emission Standards and Guidelines Information Clearinghouse (IE-ESGIC) Volume IIIa: Iron & Steel Industry Air Emission Standards

United Nations Environment Programme ,  [The State of the World Environment 1987] ,  The State of the World Environment 1987

United Nations Environment Programme ,  [The State of the World Environment 1991] ,  The State of the World Environment 1991

United Nations Environment Programme ,  [The State of the World Environment 1989 - UNEP/GC.15/7/Add.2] ,  The State of the World Environment 1989 - UNEP/GC.15/7/Add.2

United Nations Environment Programme ,  [Environmental Impact Assessment: Issues, Trends and Practice] ,  Environmental Impact Assessment: Issues, Trends and Practice

United Nations Environment Programme ,  World Health Organization ,  [Exposure Monitoring of Lead and Cadmium: An International Pilot Study within the WHO/UNEP Human Exposure Assessment Location (HEAL) Programme Technical Report] ,  Exposure Monitoring of Lead and Cadmium: An International Pilot Study within the WHO/UNEP Human Exposure Assessment Location (HEAL) Programme Technical Report

United Nations Environment Programme ,  Arab League Educational, Cultural and Scientific Organization ,  [Environmental Education: A Sourcebook (For General Education)] ,  Environmental Education: A Sourcebook (For General Education)