一般注記Distributed to depository libraries in microfiche
Shipping list no.: 92-2588-M
Physical description for original version: 33 p. : 18 cm
書誌注記Includes bibliographical references (p. 31)
原資料等に関する注記原資料の出版事項: [Washington, D.C.?] : U.S. Dept. of Labor, Mine Safety and Health Administration ; National Mine Health and Safety Academy, 1991
SUPTDOC番号: L 38.8/2: 8/991
GPO管理番号: 0644-A (MF)