Physical description for original version: v, 12 p. : 28 cm
書誌注記
Bibliography: p. 9-10
原資料等に関する注記
原資料の出版事項: [Washington, D.C.?] ; Alexandria, VA : Dept. of the Interior, U.S. Geological Survey : For sale by the Distribution Branch, Text Products Section, U.S. Geological Survey, 1985