Enger, Eldon D., Environmental science : a study of interrelationships / Eldon D. Enger, Bradley F. Smith. - Thirteenth edition. International edition. - xxv, 485 pages : illustrations (colour), maps (colour) ; 28 cm Includes index. ISBN: 9781259071584 (paperback) Subjects--Topical Terms: Environmental sciences Dewey Class. No.: 363.7 / ENG 2013