000 00341nam a2200145Ia 4500
008 230913s9999 xx 000 0 und d
082 _a515.353 RAO
100 _aRao, Sankara.K
245 0 _aIntr. To Partiat Differenthal Equations
260 _aNEW DELHI
260 _bPHI
260 _c1997
300 _a357
650 _aMathematics
999 _c138922
_d138922