Enger, Eldon D., Environmental science : a study of interrelationships / Eldon D. Enger, Delta College, Bradley F. Smith, Huxley College of the Environment, Western Washington University. - Fourteenth edition. - xx, 492 pages : colour illustrations ; 28 cm. Includes index. ISBN: 9780073532554 (paperback) RM698.69 007353255X (paperback) Subjects--Topical Terms: Environmental sciences--Textbooks.