Physical description for original version: iv, 16 p. : 28 cm
書誌注記
Bibliography: p. 15-16
原資料等に関する注記
原資料の出版事項: [Reston, Va.?] ; Alexandria, VA : Dept. of the Interior, U.S. Geological Survey : For sale by the Distribution Brfanch, Text Products Section, 1986