00714nam0-22002771i-450-990001128060403321000112806FED01000112806(Aleph)000112806FED0100011280620000920d1956----km-y0itay50------baengTheory of Approximationby Achieser N. I.Pub.Co.N.Y.Frederick Ungar1956ApprossimazioniAchieser,N. I.54196ITUNINARICAUNIMARCBK9900011280604033216-G-92818MA1MA141-02Theory of Approximation344911UNINAING01