Enger, Eldon D. Environmental science a study of interrelationships Eldon D. Enger. - 4th ed. - USA Wm. C. Brown Publishers c1992. - xiv, 514 p. : ill. (some col.), col. maps ; 28 cm. Includes bibliographical references (p. 491-495) and index. ISBN: 069709880X (pbk.) Subjects--Topical Terms: Environmental sciences. LC Class. No.: GE105 Dewey Class. No.: Cir 574.5 En3 1992