00287nam a2200133Ia 4500020000900000082001000009100001800019245004400037250000900081260004000090300000800130500000900138650000600147  aNULL  a517.6  aSaxena, H. C. 0aFinite Differences & Numerical Analysis  a10th  aN. DelhibS. Chand and Company Ltd.  a358  a1542  a-