00270nam a2200121Ia 4500082001800000100001600018245002300034260002700057300002100084490003300105500000500138700000500143  a515.1bZ79.UI  aZippin, Leo  aUses of infinityb  aNew YorkbRandomc1962  avii, 151p. Bibl.  aNew Mathematical Libraryv 7  a  a