00345nam a2200121 a 450000500170000002000150001708200130003210000180004524500190006326000600008230000250014249000560016720251203111210.0  a0821836609  a510bRAE  aRaeburn, Lain  aGraph algebras  aRhode IslandbAmerican Mathematical Societyc2000-R2005  avii,113p.c24cm.cPB  aRegional Conference Series in Mathematics Number103