00358nam a2200109Ia 4500008004100000082001700041100002400058245004400082260005000126300002100176440005100197260828b        |||||||| |||| 00| 0 eng d  a512bH927.RG  aHumphreys, James E.  aReflection groups and coxeter groupsb/  aCambridge:bCambridge University Press,c1990  axii, 204p. Index  aCambridge studies in Advanced Mathematics ; 29