00524cam 2200205 450 2063152http://id.bnportugal.gov.pt/bib/porbase/206315220030511091600.00-387-96217-479764PTBN0040589519900530d1986 k y0pory0103 baengUSMathematicsNew YorkSpringer1986XI, 476 p.51BNpor288051MacLaneSaunders1909-677009PTBNRPCMT-01-78coopUAVSDmq613867bccoopUAVSD561630UAVS9-128