00550nam a2200157Ia 4500020001500000082001700015100008400032245010300116260004800219300001600267440004000283500000500323653000600328700002500334700003300359  a0691084092  a512bC748.CG  aConference on "Combinatorial Group Theory and Topology", Utah, July 15-18, 1984  aCombinatorial group theory and topology; proceedingsbcEd. by S. M. Gersten and John R. Stallings  aPrincetonbPrinceton University Pressc1987  aviii, 551p.  aAnnals of Mathematics studies v111  a  a   aGersten, S. M. ; ed.  aStallings, John R. ; jt. ed.