Carla W Montgomery Student study guide to accomany Environmental Geology a global concern, 5th ed. / prepared by Darby Nelson. - fifth ed - McGraw Hill Boston - 167 pages : illustrations ; 28 cm index ISBN: 0697412512 Subjects--Topical Terms: Environmental sciences--Study guides. LC Class. No.: GE105 / .C862 1999 Dewey Class. No.: 22