00318nam a2200121 a 4500008004100000020001500041050001600056100002200072245003700094260003500131300002100166350000900187080109s1986    ||||||||||||||||| ||    u  a0395351650  aQA 39.2 Pra  aPrather, Ronald E10aElements of discrete mathematics  aBostonbHoughton Mifflinc1986  axiv, 538p. : ill  a0.00