Nebel, Bernard J. Environmental science : the way the world works / Bernard J. Nebel and Richard T. Wright - 9th ed. - New Jersey : Prentice-Hall, c2000. - xxi, 66 p. ; ill. ; 26 cm. + 1 computer disc (CD ; 3/4 in.) ISBN: 0130831344 Subjects--Topical Terms: Environmental sciencesEcologyHuman ecology LC Class. No.: GE105 / .W84 2005 Dewey Class. No.: 363.7 / W952e