00307nam a2200121Ia 4500020001500000082001900015100002300034245005900057260003200116300002700148500000500175700000500180  a8176498300  a510.9bC617.MS  aClawson, Calvin C.  aMathematical sorcerybrevealing the secrets of numbers  aNew DelhibViva Booksc2004  aix, 294p. Bibl. Index.  a  a