Caring for the earth.

Библиографические подробности
Корпоративные авторы:	International Union for Conservation of Nature and Natural Resources, World Wide Fund for Nature, United Nations Environment Programme
Формат:	‌
Язык:	English
Опубликовано:	Gland, Switzerland IUCN-the World Conservation Union ; United Nations Environment Programme : World Wide Fund for Nature c1991.
Предметы:	Human ecology. Nature conservation. Sustainable development.