Natural resource conservation :
Owen, Oliver S., 1920-
Natural resource conservation : an ecological approach / Oliver S. Owen, Daniel D. Chiras. - 5th ed. - New York : London : Macmillan ; Collier Macmillan, c1990. - xiii, 538 p. : ill. ; 29 cm.
Includes bibliographical references.
002390111X
Conservation of natural resources.
Ecology.
Environmental protection.
Conservation of natural resources--United States.
Ecology--United States.
Environmental protection--United States.
S938 / .O87 1990
Natural resource conservation : an ecological approach / Oliver S. Owen, Daniel D. Chiras. - 5th ed. - New York : London : Macmillan ; Collier Macmillan, c1990. - xiii, 538 p. : ill. ; 29 cm.
Includes bibliographical references.
002390111X
Conservation of natural resources.
Ecology.
Environmental protection.
Conservation of natural resources--United States.
Ecology--United States.
Environmental protection--United States.
S938 / .O87 1990