00315nam a2200109Ia 4500008004100000082001900041100001700060245007200077260003400149300001000183650001200193060110s9999    xx            000 0 und d  a515.353bAMA/E  aAMARANATH, T 3aAn elementary course in partial differential equationscT Amaranath  bNarosa Publishing Housec1997  a135p.  a515.353