Columbia subject headings:
Microtonal music--History and criticism.
Wyschnegradsky, Ivan, 1893-1979.
Harvard subject headings:
Microtonal music--History and criticism.
Wyschnegradsky, Ivan, 1893-1979
Wyschnegradsky, Ivan, 1893-1979--Criticism and interpretation.
Princeton subject headings:
Microtonal music--History and criticism.
Wyschnegradsky, Ivan, 1893-1979.