Physical description for original version: v, 12 p. : 28 cm
書誌注記
Bibliography: p. 10-11
原資料等に関する注記
原資料の出版事項: [Menlo Park, Calif.?] ; Denver, CO : Dept. of the Interior, U.S. Geological Survey : For sale by the Books and Open-File Reports Section, U.S. Geological Survey, 1986