Polish group actions: Dichotomies and generalized elementary embeddingsHoward Becker(US Forest Service)Journal of the American Mathematical SocietyJanuary 1, 199810.1090/s0894-0347-98-00258-6Cited by 42SaveCiteExport RISWatch citationsRelated PapersEarly Ionian Historians.|American Sociological Review|1940|18