00247nam a2200097 a 450000500170000008200190001710000160003624500460005226000330009830000180013120251203090945.0  a515.9,bD, gup  aGupta, R.K.  aTheory of functions of a complex variable  aMeerutbMeenakshi, dInc1972  axi,484p, 22cm