00862nam--2200325---450-99000158583020331620051007121500.0000158583USA01000158583(ALEPH)000158583USA0100015858320040420d1963----km-y0itay0103----baengUS||||||||001yyExploring mathematicsNew York [etc.]American Book Company1963327 p.24 cm20012001001-------2001ITsalbcISBD990001585830203316II.4. 2950(VI C 1887)18466 L.M.VI CBKUMASIAV31020040420USA011728COPAT69020051007USA011215Exploring mathematics938756UNISA