000 00283pam a2200109a 44500
082 _aTR
_bTPR-70
100 _aW. K. Overbey
245 1 _aPredicting probale roof fall areas in advance of mining by geological analysis
260 _a
_b
_c
700 _aJ. Pasini
997 _aTR3888 C
999 _c404980
_d404980