000 00296nam a2200121Ia 4500
008 211209s1980 xx 000 0 und d
041 _aeng
082 _a624.1906 SUB/SAX
100 _aSUBASH C
245 _aTUNNEL ENGINEERING
260 _aNEW DELHI
_bDHANPAT RAI AND SONS
_c1980
300 _a184
999 _c20694
_d20694