Benson, John Environmental ethics : an introduction with readings / John Benson - London : Routledge, c2000. - viii, 295 p. : 23 cm. ISBN: 0415212367 LCCN: Subjects--Topical Terms: Environmental ethics EthicsEnvironment LC Class. No.: GE42 / .B46 2000 Dewey Class. No.: 179.1 / B474e