Natural resource Coservation:
Owen, S. Oliver. 1990
Natural resource Coservation: An Ecological approach/ oliver S. Owen. - 5th ed. - New York.; Macmillan. 1990. - xiii,538p.: ill. ; 28cm.
002390111
conservation of natural resources.
Ecology.
Environmental conservation.
conservation of natural resources
Environmental preservation-United states
S 938 .O87 1990
Natural resource Coservation: An Ecological approach/ oliver S. Owen. - 5th ed. - New York.; Macmillan. 1990. - xiii,538p.: ill. ; 28cm.
002390111
conservation of natural resources.
Ecology.
Environmental conservation.
conservation of natural resources
Environmental preservation-United states
S 938 .O87 1990