Caring for the earth.

書目詳細資料
Corporate Authors:	International Union for Conservation of Nature and Natural Resources, World Wide Fund for Nature, United Nations Environment Programme
格式:	圖書
語言:	English
出版:	Gland, Switzerland IUCN-the World Conservation Union ; United Nations Environment Programme : World Wide Fund for Nature c1991.
主題:	Human ecology. Nature conservation. Sustainable development.