000
00306pam a2200109a 44500
082
_a
TR
_b
IC-9217
100
_a
Thomas M. Barczak
245
1
_a
Practical considerations in longwall face and gate road support selection and utilization
260
_a
_b
_c
700
_a
Carol L. Tasillo
997
_a
TR6428 C
999
_c
405667
_d
405667