000 00285pam a2200109a 44500
082 _aTR
_bRI-9247
100 _aGregory J. Chekan
245 1 _aEffects of abandoned multiple seam working on a long wall in virginia
260 _a
_b
_c
700 _aDavid L. Dawyer
997 _aTR6620 C
999 _c405785
_d405785