State of the Environment the state of the world environment

State of the Environment the state of the world environment

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Manylion Llyfryddiaeth
Prif Awdur: United Nations Environmental Program
Fformat: Llyfr
Iaith:English
Cyhoeddwyd: Nairobi, Kenya United Nations Environmental Program 1987.
Pynciau:
Environmental protection > Congresses.
Environmental policy > Congresses.
Health > Environmental aspects.