Enger, Eldon D. Environmental science : a study of interrelationship / Eldon D. Enger and Bradley F. Smith - 5th ed. - Boston : c1995. - xvi, 431 p. ; ill. ; 25 cm. ISBN: 069715906X LCCN: Subjects--Topical Terms: Environmental science LC Class. No.: GE105 / .E54 1995 Dewey Class. No.: 363.7 / E57e