Environmental studies : the Earth as a living planet /
Daniel B. Botkin and Edward A. Keller.
- Columbus, [Ohio] : C.E. Merrill Pub. Co., c1982.
- ix, 506 p. : ill. ; 29 cm.
Includes bibliographies and index.
0675098130
82080262
Ecology. Pollution--Environmental aspects. Conservation of natural resources.