World resources 1990-91 : a report
by the World Resources Institute ; in collaboration with the United Nations Environment Programme and the United Nations Development Programme.
- New York, N.Y. Oxford University Press 1990.
- xiv, 383 s. delvis farvelagte ill. 28 cm.
Pêa omslaget: Special focus on climate change, Latin America plus essential data on 146 countries. A guide to the global environment.