Environmental studies :
Botkin, Daniel B.
Environmental studies : the Earth as a living planet / Daniel B. Botking and Edward A Keller. - Columbus, [Ohio] : C.E. Merrill Pub. Co., c1987. - xvi, 685p : ill ; 29cm.
Includes bibliographies and index.
Open access.
0675204623
Ecology.
Pollution--Environmental aspects.
Conservation of natural resources.
Environmental studies : the Earth as a living planet / Daniel B. Botking and Edward A Keller. - Columbus, [Ohio] : C.E. Merrill Pub. Co., c1987. - xvi, 685p : ill ; 29cm.
Includes bibliographies and index.
Open access.
0675204623
Ecology.
Pollution--Environmental aspects.
Conservation of natural resources.