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3
-
Environmental accounting : a review of current debate / ed. by A. Markandya and C. Costanza.
- United Nations Environment Programme (UNEP),
- 1993.
- Nairobi :
-
Consultative expert group meeting on environmental impact assessment, Paris, 27-28 October 1993 : report of the meeting / Hussein Abaza.
- United Nations Environment Programme (UNEP),
- 1993.
- Nairobi :
-
Environmental impact assessment : where to from here? / Ian Campbell.
- United Nations Environment Programme (UNEP),
- 1993.
- Nairobi :