00286nam a2200109Ia 4500020001500000082001800015100001900033245003500052260004500087300000900132650003500141  a8185198772  a515.353 RAU/P  aRauch, Jeffrey 0aPartial Differential Equations  bNarosa Publishing HouseaNew Delhic1992  a263p  aPartial Differential Equations