Columbia subject headings:
Croats--Austria.
Croats--Czechoslovakia.
Croats--Foreign countries.
Croats--Hungary.
Croats--Italy.
Croats--Romania.
Harvard subject headings:
Croats--Austria.
Croats--Czechoslovakia.
Croats--Foreign countries
Croats--Hungary.
Croats--Italy.
Croats--Romania.
Princeton subject headings: