000 00345nam a2200145Ia 4500
008 230913s9999 xx 000 0 und d
082 _a515.353 rao
100 _aRao, K.Sankara
245 0 _aIntroduction To Partial Differential Equations
260 _aNEW DELHI
260 _bPHI
260 _c0
300 _a357
650 _aMathematics
999 _c139557
_d139557