000 00293nam a2200133Ia 4500
008 190131s9999 xx 000 0 und d
020 _a9.78817E+12
082 _a510
082 _bBAL
100 _a"Bali,N.P."
245 2 _aA Text Book Of Engineeri
260 _aNew delhi
260 _bLaxmi Pub
999 _c484
_d484