000 00263nam a2200109Ia 4500
008 190719s9999 xx 000 0 und d
100 _aGeorge F Simmons
245 0 _aDifferential equations
260 _aNew Delhi
_bKalyani Pub
_c1988
650 _aMath
942 _cBK
999 _c7253
_d7253