00321nam a2200133Ia 4500001000500000005001700005008004100022020001500063082001700078245005000095250000700145260001600152650001900168525020261006003840.0120911s9999    xx            000 0 und d  a0070108811  a515.2433 CHU  aFourier series and boundary value problems-4e  a4E  aMCGRAW HILL  aFourier Series