The 1993 Information please environmental almanac

Sonraí bibleagrafaíochta
Údar corparáideach:	World Resources Institute
Formáid:	LEABHAR
Teanga:	English
Foilsithe / Cruthaithe:	Boston Houghton Mifflin Co. 1993. ©1992.
Ábhair:	Environmental protection. Human ecology. Ecology. Conservation of natural resources.