Physical description for original version: viii, 26 p. : 28 cm
書誌注記
Bibliography: p. 21
原資料等に関する注記
原資料の出版事項: Washington, D.C. : Energy Information Administration, Office of Energy Markets and End Use, U.S. Dept. of Energy : For sale by the Supt. of Docs., U.S. G.P.O., 1983