Botzler, Richard G. Environmental ethics : divergence and convergence / Richard G. Botzler and Susan J. Armstrong - 2nd ed. - Boston : McGraw-Hill, c1998. - xii, 600 p. : ill. ; 24 cm. ISBN: 0070061807 LCCN: Subjects--Topical Terms: Environmental ethicsHuman ecologyHistory LC Class. No.: GF80 / .E585 1998 Dewey Class. No.: 179.1 / B751e