00291nam a2200121Ia 4500020001500000082001900015100001900034245004200053260004100095300002300136500000500159700000500164  a0143032585  a510.9bIf23.UH  aIfrah, Georges  aThe universal history of numbers IIb  aNew DelhibPenguin Books Indiac2005  a544p. Bibl. Index.  a  a