00719nam0-22002531i-450-990001147280403321000114728FED01000114728(Aleph)000114728FED0100011472820000920d1980----km-y0itay50------baengGroups, trees and projective modulesby Dicks WarrenBerlin [etc.]Springer-Verlag1980Lecture Notes in Mathematics790Dicks,Warren54907ITUNINARICAUNIMARCBK990001147280403321C-20-(79020271MA1MA1Groups, trees and projective modules80990UNINAING01