000 00262pam a2200097a 44500
082 _aTR
_bRI-9214
100 _aJohn C. Lascola
245 1 _aComparison of aerial and ground surveying of subsidence over an active long wall
260 _a
_b
_c
997 _aTR1153 C
999 _c396409
_d396409