Environmental biology :
Verma, P S.
Environmental biology : principles of ecology / P S Verma; V K Agarwal. - New Delhi : Chand , 1983. - viii, 591 p. : ill. ; 24 cm.
Includes bibliographical references and index.
8121908590
Biology.
Ecology.
577
Environmental biology : principles of ecology / P S Verma; V K Agarwal. - New Delhi : Chand , 1983. - viii, 591 p. : ill. ; 24 cm.
Includes bibliographical references and index.
8121908590
Biology.
Ecology.
577