Columbia subject headings:
Folk music--Russia--History and criticism.
Music and folklore.
Mussorgsky, Modest Petrovich, 1839-1881.
Harvard subject headings:
Folk music--Russia--History and criticism.
Mussorgsky, Modest Petrovich, 1839-1881
Princeton subject headings:
Folk music--Russia.
Mussorgsky, Modest Petrovich, 1839-1881--Criticism and interpretation.