00731nam0-22002531i-450-990001228800403321000122880FED01000122880(Aleph)000122880FED0100012288020000920d1974----km-y0itay50------baengEssentials of elementary school mathematicsby LARSEN M D. FEJFAR J L.New York [etc.]Academic Press1974.Larsen,Max D.57000Fejfar,James L.ITUNINARICAUNIMARCBK990001228800403321107-E-2815199MA1MA1Essentials of elementary school mathematics382081UNINAING01