000			00497pam a2200145a 44500
082			_aUSBM _bIC-8545
100			_aSamul A
245	1		_aBUREAU OF MINES PROCEDURE FOR EVALUATING QUARTZ CONTENT OF RESPIRABLE COAL MINE DUST.
260			_a _bU. S. Dept. Of The Interior, Bureau Of Mines, [S. L.] _c1972
300			_a10
500			_aBound With Usbm Ci-8539-8544,8546-8555.Lack No-8540-41,8543-44,8547,8549-50,8552-8554.
700			_aJacobson,Pa Murry
964			_gCIRC
997			_aTR14568 C
999			_c399922 _d399922