Turk, Amos. Student's guide for environmental science / Amos Turk, Jonathan Turk and Janet T. Wittes. - Philadelphia ; W. B. Saunders, 1978. - v, 104 p. ; - Saunders Golder Sunburst series in environmental studies . ISBN: 0721689248 Subjects--Topical Terms: Environmental studies. Dewey Class. No.: 628 / St