000
00285pam a2200109a 44500
082
_a
TR
_b
RI-9247
100
_a
Gregory J. Chekan
245
1
_a
Effects of abandoned multiple seam working on a long wall in virginia
260
_a
_b
_c
700
_a
David L. Dawyer
997
_a
TR6620 C
999
_c
405785
_d
405785