00285nam a2200109Ia 450000500170000000800410001708200120005810000180007024500370008826000420012530000080016720260224040800.0260224s9999||||xx |||||||||||||| ||und||  a510 KRE  aKreyszig, E.  0aAdvanced engineering mathematics  aNew York: John Wiley & Sons Co.c1972  a866