00388nam a2200133Ia 4500020001500000082001600015100001800031245006700049260004800116300002800164490005200192500000500244700000500249  a0521540313  a513bK76.FA  aKock, Joachim  aFrobenius algebras and 2D topological quantum field theoriesb  aCambridgebCambridge University Pressc2003  axvi, 240p. Bibl. Index.  aLondon Mathematical Society student texts v 59  a  a