00313nam a2200121Ia 4500082001900000100001600019245006100035260002700096300002900123490002900152500000500181700000500186  a511.6bN734.MC  aNiven, Ivan  aMathematics of choice or how to count without countingb  aNew YorkbRandomc1965  aviii, 202p. Index, Bibl.  aNew Mathematical Library  a  a