000 00305nam a2200121Ia 4500
008 230222s9999 xx 000 0 und d
082 _a515.352
100 _aZafar Ahsan
245 0 _aDifferential Equations and Their Applications
250 _a2
260 _bPhi Learning, New Delhi
_c2012
942 _cBK
999 _c22284
_d22284