00670nam0-22002411i-450-990001233940403321000123394FED01000123394(Aleph)000123394FED0100012339420000920d1971----km-y0itay50------baengTopics in Approximation Theory.by SHAPIR O Harold S.Berlin [etc.]Springer-Verlag1971.Shapiro,Harold S.57105ITUNINARICAUNIMARCBK990001233940403321C-20-(18711307MA1MA1Topics in approximation theory81564UNINAING01