一般注記"Work done in cooperation with the Energy Information Administration, U.S. Department of Energy."
Shipping list no.: 90-421-P
Physical description for original version: iii, 19 p. : 28 cm
書誌注記Includes bibliographical references (p. 18-19)
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 : Books and Open-File Reports Section [distributor], 1990
SUPTDOC番号: I 19.4/2: 1051
GPO管理番号: 620-A