000 00258pam a2200097a 44500
082 _aTR
_bIC-7744
100 _aR. O. Pynnoneh
245 1 _aAnalysis of 346 accidents,undergrounds iron-ore mines, lake superior district
260 _a
_b
_c
997 _aTR5340 C
999 _c405438
_d405438