000 00352nam a2200157Ia 4500
008 170101s1963 xx 000 0 und d
082 _a624.19 P36T
100 _aPEQVIGNOT, C.A
245 0 _aTunnels and tunneling
260 _bLondon
_c1963
300 _a555p
650 _aTUNNELS
653 _aTUNNELING
653 _aTUNNELS
942 _2ddc
_cB
999 _c30668
_d30668