000 00243pam a2200097a 44500
082 _aTR
_bIC-7571
100 _aWalter E. Lewis
245 1 _aHudraulic tunneling in St.Peter sandstone at minneapolis,Minn
260 _a
_b
_c
997 _aTR5227 C
999 _c405402
_d405402