00735nam0-22002891i-450-99000088578040332120001010000088578FED01000088578(Aleph)000088578FED0100008857820001010d--------km-y0itay50------baitay-------001yyNonlinear ProblemsAmericaMadison press1963.p.321ill.cm 21MatematicaLanger,Rudolph Ernest12379ITUNINARICAUNIMARCBK99000088578040332103 M.0,842313IINTCIINTCNonlinear problems339794UNINAING01