01028nam a2200325 i 450099100132666970753620020507191420.0950717s1980 us ||| | eng 0123194504b10831988-39ule_instLE01310557ExLDip.to Matematicaeng512.2AMS 20-06AMS 20-XXAMS 20MHall, T. E.536754Semigroups /edited by T. E. Hall, P. R. Jones, G. B. PrestonNew York :Academic Press,1980x, 255 p. ;23 cm.Group theoryCongressesSemigroupsJones, P. R.Preston, G. B..b1083198821-09-0628-06-02991001326669707536LE013 20-XX HAL21 (1980)12013000032252le013-E0.00-l- 00000.i1094101028-06-02Semigroups923728UNISALENTOle01301-01-95ma -engus 01