00319    a2200121   4500020001500000082001600015100002300031245004900054260003800103300001800141650001600159700002200175  a0070380317  a510.76bLIP  aLipschutz, Seymour  a2000 solved problems in discrete mathematics  aNew YorkbMcGraw-Hillc1992g1992  av,404p.c29cm  aMathematics  aLipson, Marc Lars