000 00508 a2200181 4500
005 20201217171010.0
008 201217b xxu||||| |||| 00| 0 eng d
040 _cIIT Kanpur
041 _aeng
082 _a624.193
_bAu78
245 1 _aFourth australian tunnelling conference.
260 _bAustralian Institute Mining And Metallurgy
_c1981
300 _a389p
650 _aTunnels -- Congresses
650 _aRock -- Drills -- Congresses
650 _aRailroad Tunnels -- Congresses
942 _cBK
999 _c464803
_d464803