000 00297pam a2200109a 44500
082 _aTR
_bTPR-32
100 _aD. P. Schlick
245 1 _aEvaluation of the respirable dust sampling program in united states underground coal mines
260 _a
_b
_c
700 _aW. E. Byers
997 _aTR3850 C
999 _c404961
_d404961