00604cam 22002171 450 1833674http://id.bnportugal.gov.pt/bib/porbase/183367420030607193400.00-226-42454-592618PTBN0058054019891129d1974 k y0pory0103 baengUSCommutative ringsChicagoUniversity1974VIII, 182 p.512BNpor292016KaplanskyIrving569753PTBNRPCMT-13-31coopUAVSDmq1246703bccoopUAVSD453950512 KAP ComcoopUMDCJmq1246704bccoopUMDCJ57290UAV17-81