00319nam a2200121Ia 4500020001500000082001800015100002000033245003500053260004300088300000900131650003500140700002200175  a0852267223  a515.353 PRA/P  aPrasad, Phoolan 0aPartial Differential Equations  bWiley Eastern LimitedaNew Delhic1991  a252p  aPartial Differential Equations  aRavindran, Renuka