00298nam a2200121 a 450000500170000002000150001708200220003210000200005424500370007425000110011126000330012230000210015520251203092001.0  a8122400167  a510.2462,bD, kre  aKreyszig, Erwin  aAdvanced engineering mathematics  a5th ed  aNew Delhi, New Age, Inc1995  axvii,988p.c22cm