Columbia subject headings:
Finno-Ugrians.
Finno-Ugric languages--Foreign elements--Russian.
Languages in contact--Soviet Union.
Minorities--Soviet Union.
Russian language--Foreign elements--Finno-Ugric.
Russians.
Harvard subject headings:
Finno-Ugrians.
Finno-Ugric languages--Foreign elements--Russian
Languages in contact--Soviet Union.
Minorities--Soviet Union
Russian language--Foreign elements--Finno-Ugric
Russians.
Princeton subject headings:
Finno-Ugrians.
Finno-Ugric languages--Foreign elements--Russian.
Languages in contact--Soviet Union.
Minorities--Soviet Union.
Russian language--Foreign elements--Finno-Ugric.
Russians.