00296nam a2200133Ia 4500020000900000082001000009100002300019245003900042250000800081260005300089300000800142500000600150650000600156  aNULL  a517.8  aChurchill, Ruel V. 0aComplex Variables And Applications  a2nd  aNew YorkbMcGraw Hill International Book Company  a297  a0  a-