01074nam2-2200361---450-99000333112020331620091012104451.00-691-02531-2000333112USA01000333112(ALEPH)000333112USA0100033311220091012d1992----km-y0itay50------baengUSy---||||001yyCombinatorics of train tracksR. C. Pennerwith J. L. HarerPrincentonPrincenton university presscopyr. 1992216 p.24 cmAnnals of mathematics studies1250010003153552001Annals of mathematics studies125Analisi combinatoria511.6PENNER,R. C.606391HARER,J. L.ITsalbcISBD990003331120203316510 AMSP 12537883/CBS51000218100BKSCIRSIAV69020091012USA011044Combinatorics of train tracks1120684UNISA