97
Turk, Amos
Ecology, pollution, environment
Philadelphia
Saunders
1972
ix, 217p.: ill
Includes bibliographies and index
Amos Turk, Jonathan Turk, Janet T. Wittes
، Pollution
، Ecology
، Population
TD
174
.
T87
AU
AU Turk, Jonathan
AU Wittes, Janet T.
TI
SH
