State of the environment the state of the world environment.

State of the environment the state of the world environment.

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书目详细资料
企业作者: United Nations Environmental Program
格式: 图书
语言:English
出版: Nairobi, Kenya UNEP c1986.
丛编:UNEP/GC 14/5-
主题:
Environmental protection > Congresses.
Environmental policy > Congresses.
Health > Environmental aspects.