Columbia subject headings:
Amusements--Russia.
Music--Russia--History and criticism.
Musical instruments--Russia.
Russia--Social life and customs.
Harvard subject headings:
Amusements--Russia.
Entertainers--Russia.
Fools and jesters--Russia.
Russia--Social life and customs.
Princeton subject headings:
Dömbra (Two-stringed lute)
Gusli.
Minstrels--Russia.
Music--Russia--History and criticism.
Musical instruments--Russia.