00295nam a2200109Ia 4500082001900000100001900019245006000038260004800098300002900146500000500175700000500180  a511.6bB915.AC  aBryant, Victor  aAspects of combinatorics; a wide-ranging introductionb  aCambridgebCambridge University Pressc1993  aviii, 266p. Index, Bibl.  a  a