00272nam a2200133Ia 4500020000900000082001100009100002100020245003500041250000600076260003300082300000800115500000900123650000600132  aNULL  a517.38  aPrasad, Phoolan  0aPartial Differential Equations  a-  aN. DelhibWiley Eastern Ltd.  a252  a4082  a-