Nebel, Bernard J. Environmental science : the way the world works / Bernard J. Nebel and Richard T. Wright - 7th ed. - New Jersey : Prentice-Hall, c2000. - xxi, 66 p. : ill. ; 26 cm. ISBN: 0130831344 LCCN: Subjects--Topical Terms: Environmental sciencesEcologyHuman ecology LC Class. No.: GE105 / .N42 2000 Dewey Class. No.: 363.7 / N359e