Columbia subject headings:
Folk songs, Russian--History and criticism.
Kri͡ukova, Agrafena Matveevna, 1855-1921.
Harvard subject headings:
Folk songs, Russian.
Kriukova, Agrafena Matveevna, 1855-192l.
Princeton subject headings:
Folk songs--Russia--History amd criticism.
Kri︠u︡kova, Agrafena Matveevna, 1855-1921.