00645c 2200229 450 2049486http://id.bnportugal.gov.pt/bib/porbase/204948620030422060300.00-02-353820-110903PTBN0011516419880121d1986 k y0pory0103 baengUSAbstract algebraI. N. HersteinNew YorkMacmillancop. 1986289 p.25 cm512BNpor292016HersteinI. N.329023PTBNRPC20-01/HERcoopUCMAmq3075197bccoopUCMA0BGUM 512coopUMSDmq179318bccoopUMSD40573/CEN0UMSD5-00015