000 002490000a22001090004500
245 _aTunnelling directory - 1980
100 _aSerge, D.F., ed.
260 _aLondon
_bMorgan-G.
_c1980
080 _a624.19(058.7)
_bT8
041 _aEN
942 _cBK
999 _c110774
_d110774