Earth, air, and water resources and environment in the late 20th century

Sonraí bibleagrafaíochta
Príomhchruthaitheoir:	Simmons, Ian Gordon 1937-
Formáid:	LEABHAR
Teanga:	English
Foilsithe / Cruthaithe:	London E. Arnold c1991.
Ábhair:	Human ecology. Conservation of natural resources. Natural resources.