000 00310nam a2200121Ia 4500
100 _aWilliam E Boyce
245 _aElementary Differential Equations and Boundary Value Problems
250 _a2nd
260 _c1969
_bJohn Wiley & Sons
_aNew York
300 _axiv+533
700 _aRichard C DiPrima
942 _cBK
999 _c6650
_d6650