一般注記Cover title
"The National Coal Resource Assessment (NCRA) project by the U.S. Geological Survey is designed to assess U.S. coal with the greatest potential for development in the next 20-30 years"--P. 4
Shipping list no.: 2000-0015-M
Physical description for original version: 49 p. : 28 cm
書誌注記Includes bibliographical references (p. 47-49)
原資料等に関する注記原資料の出版事項: [Reston, Va.] : U.S. Dept. of the Interior, U.S. Geological Survey, [1998]
SUPTDOC番号: I 19.76: 98-789-A
GPO管理番号: 0624-H (MF)
GPO管理番号: 0624-H (online)