Physical description for original version: iii, 13 p. : 28 cm
書誌注記
Bibliography: p. 13
原資料等に関する注記
原資料の出版事項: [Reston, Va.?] ; Denver, CO : Dept. of the Interior, U.S. Geological Survey : For sale by the Branch of Distribution, Books and Open-File Reports Section, 1988