Physical description for original version: iii, 94 p. : 28 cm
書誌注記
Includes bibliographical references (p. 89-94)
原資料等に関する注記
原資料の出版事項: Tucson, Ariz. ; Denver, CO : U.S. Dept. of the Interior, U.S. Geologicqal Survey : U.S. Geological Survey, Branch of Information Services [distributor, 1996]