00690nam0-22002531i-450-990001254890403321000125489FED01000125489(Aleph)000125489FED0100012548920000920d--------km-y0itay50------baengPartial Differential Equationsde JohnBerlin [etc.]Springer-VerlagApplied mathematical sciences1John,Fritz331219ITUNINARICAUNIMARCBK990001254890403321C-33-(111950MA1MA1Partial differential equations332400UNINAING01