00306nam a2200121 a 450000500170000002000150001708200220003210000200005424500370007425000110011126000410012230000210016320251203091521.0  a0471599891  a510.2462,bD, Kre  aKreyszig, Erwin  aAdvanced engineering Mathematics  a7th ed  aNew YorkbJoh Wiley & sons Incc1993  axvii,1271p, 22cm