00776nam0-22002531i-450-990001266770403321000126677FED01000126677(Aleph)000126677FED0100012667720000920d--------km-y0itay50------baengTopics in Differential and Integral Equations and Operator Theoryby KreinBasel [etc.]BirkhauserOperator theory, advances and applications7Krejn,Mark Grigorevic57875ITUNINARICAUNIMARCBK990001266770403321C-5-(74913MA1MA1Topics in Differential and Integral Equations and Operator Theory379935UNINAING01