9100  General reference works (handbooks, dictionaries, bibliographies, etc.)


9101  Instructional exposition (textbooks, tutorial papers, etc.)


9102  Research exposition (monographs, survey articles)


9103  Historical (must also be assigned at least one classification number from section 01)


9104  Explicit machine computation and programs (not the theory of computation or programming)


9106  Proceedings, conferences, collections, etc.


9108  Computational methods



91Axx  Game theory

91Bxx  Mathematical economics {For econometrics, see 62P20}

91Cxx  Social and behavioral sciences: general topics {For statistics, see 62XX}

91Dxx  Mathematical sociology (including anthropology)

91Exx  Mathematical psychology

91Fxx  Other social and behavioral sciences (mathematical treatment)
