Schifferes, Justus Julius, 1907- Essentials of healthier living : a college text in personal and environmental health / Justus J. Schifferes, Louis J. Peterson ; with a foreword by William Hammond - 4th ed. - New York : John Wiley & Sons, 1972 - xvi, 492 p. : ill. ; 25 cm. Bibliography: p. 459-476 ISBN: 0471760404 Subjects--Topical Terms: HealthEnvironmental health