Nebel, Bernard J Environmental Science : The Way The World Works / by Bernard J. Nebel and Richard T. Wright - 5th ed. - New Jersey: Prentice- Hall, 1996. - xxi, 698p. ISBN: 9780133521542 Subjects--Topical Terms: EcosystemsEnvironmentalPopulationSocial Work Dewey Class. No.: 363.7 / NEB/E