000 00248pam a2200109a 44500
082 _aTR
_bRI-9225
100 _aK. Y. Haramy
245 1 _aCauses and control of coal mine bumps
260 _a
_b
_c
700 _aJ. A. Mcdonnell
997 _aTR1155 C
999 _c404742
_d404742