Man and environment :
Webb, Leonard.
Man and environment : conservation of natural resources / Leornard Webb. - Canada : Gage Educational Publishing, 1973. - 83 p. : ill. ; 21 cm.
Includes index.
771572190
Human ecology.
Conservation of natural resources.
Population.
363.7 WEB
Man and environment : conservation of natural resources / Leornard Webb. - Canada : Gage Educational Publishing, 1973. - 83 p. : ill. ; 21 cm.
Includes index.
771572190
Human ecology.
Conservation of natural resources.
Population.
363.7 WEB