Columbia subject headings:
Agriculture--Economic aspects--Russia (Federation)--Mordovii︠a︡.
Collective farms--Russia (Federation)--Mordovii︠a︡.
Harvard subject headings:
Agriculture--Economic aspects--Russia (Federation)--Mordovskai︠a︡ A.S.S.R.
Collective farms--Russia (Federation)--Mordovskai︠a︡ A.S.S.R.
Princeton subject headings: