00465nam a2200157 a 4500008004100000100002100041245005600062250001200118260004200130300003700172500002000209650005100229003000100280005001700281040000900298                                          aKreyszig, Erwin. 0aAdvanced engineering mathematics /cErwin Kreyszig.  a7th ed.  aNew York :bJohn Wiley & Sons,c1993.  axvii, 1383 p. :bill. ;c25 cm.   aIncludex index.  aMathematical physicsxengineering mathematics.20230123125045.0  cNUST