00349nam a2200133Ia 4500003000400000008004100004020002300045040000800068100001700076245007300093260002800166300001000194365001100204LDD181029s9999    xx            000 0 und d  a8173191719c110.00  cLDD  aAmaranath,T. 3aAn elementary course in Partial differential equationscT. Amaranath  aNew DelhibNarosac1997  ax,135  b110.00