11980 Mathematics subject classification1980 Mathematics subject classificationde American Mathematical SocietyEdiciones (1)1980 Mathematics subject classification. (1978)[s.n.] · inglésMás obras de American Mathematical SocietyAAlgebra. Translations Series 1, Volume 1Algebra. Translations Series 1, Volume 1MMathematical Surveys and MonographsMathematical Surveys and MonographsMMship American Mathematical SocietyMship American Mathematical Society