00760nam0-22002771i-450-990001278130403321000127813FED01000127813(Aleph)000127813FED0100012781320000920d1961----km-y0itay50------baengBoundary and Eigenvalue Problems in Mathematical Physicsby Sagan Hanss.l.John Wiley1961Fisica teoricaSagan,Hans50338ITUNINARICAUNIMARCBK9900012781304033215-B-143800MA1MA100A79Boundary and Eigenvalue Problems in Mathematical Physics340510UNINAING01