01218nam a2200325 i 450099100096255970753620020507180652.0931202s1986 ne ||| | eng 0444700439b10781821-39ule_instLE01304948ExLDip.to Matematicaeng512.22AMS 20-06AMS 20-XXAMS 20C05QA1.N86Karpilovsky, Gregory57743Group and semigroup rings :proc. of the intern. conf. on Group and semigroup rings held at Univ. of the Witwatersrand, Johannesburg, South Africa 7-13 July, 1985 /ed. Gregory KarpilovskyAmsterdam :North-Holland,1986viii, 267 p. ;24 cmNorth-Holland mathematics studies,0304-0208 ;126Group ringsGroup theoryCongresses.b1078182123-02-1728-06-02991000962559707536LE013 20-XX KAR11 (1986)12013000115672le013-E0.00-l- 03030.i1088147528-06-02Group and semigroup rings921945UNISALENTOle01301-01-93ma -engne 01