Dyfyniad APA

Economic comission for Europe. (2003). Environmental policy in transition: Ten years of unece environmental performance reviews.

Dyfyniad Arddull Chicago

Economic comission for Europe. Environmental Policy in Transition: Ten Years of Unece Environmental Performance Reviews. 2003.

Dyfyniad MLA

Economic comission for Europe. Environmental Policy in Transition: Ten Years of Unece Environmental Performance Reviews. 2003.

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