00403nam a2200133 a 450000500170000002000150001708200190003210000190005124500630007026000390013330000190017249000570019170000210024820251203090721.0  a007004452X  a519.4,bD, ben  aBender, Carl M  aAdvanced mathematical methods for scientists and engineers  aAucklaNew DelhibMcGraw-Hillc1978  axiv,592p, 22cm  aInternational series in pure and applied mathematics  aOrszag, Steven A