一般注記Government document call number: L 38.17/3: 13/2003
Physical description for original version : iii, 42 p. : ill. ; 18 cm
Shipping list no.: 2003-0407-M
Reproduction note: Microfiche. [Washington, D.C.] : Supt. of Docs., U.S. G.P.O., 2003 1 microfiche : negative
書誌注記Includes bibliographical references (p. 35-36)
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, [2003]