Columbia subject headings:
Bartók, Béla, 1881-1945.
Harvard subject headings:
Bartók, Béla, 1881-1945
Bartók, Béla, 1881-1945--Correspondence.
Bartók, Béla, 1881-1945. Duets,
Doflein, Erich, 1900-1977--Correspondence.
Musicologists--Germany--Correspondence.
Princeton subject headings:
Bartók, Béla, 1881-1945--Correspondence.
Bartók, Béla, 1881-1945. Duets,
Doflein, Erich, 1900---Correspondence.
Musicologists--Germany--Correspondence.