00378nam a2200121Ia 4500082001900000100003200019245009400051260002900145300001500174500000500189700003200194700003000226  a515.9bC563.CV  aChurchill, R. V. and Others  aComplex variables and applicationsbcBy R. V. Churchill, James W. Brown and R. F. Verhey  aTokyobMcGraw-Hillc1974  axii, 332p.  a  aBrown, James W. ; jt. auth.  aVerhey, R. F. ; jt. auth.