Columbia subject headings:
Croatia--Politics and government--20th century--Congresses.
Forced labor--Croatia--History--20th century--Congresses.
Internment camps--Croatia--History--20th century--Congresses.
Labor camps--Croatia--History--20th century--Congresses.
Nazi concentration camps--Croatia--History--20th century--Congresses.
Prisons--Croatia--History--20th century--Congresses.
Yugoslavia--Politics and government--20th century--Congresses.
Harvard subject headings:
Concentration camps--Croatia--History--20th century--Congresses.
Croatia--Politics and government--20th century--Congresses.
Forced labor--Croatia--History--20th century--Congresses.
Labor camps--Croatia--History--20th century--Congresses.
Prisons--Croatia--History--20th century--Congresses.
Yugoslavia--Politics and government--20th century--Congresses.
Princeton subject headings:
Croatia--Politics and government--20th century--Congresses.
Forced labor--Croatia--History--20th century--Congresses.
Internment camps--Croatia--History--20th century--Congresses.
Labor camps--Croatia--History--20th century--Congresses.
Prisons--Croatia--History--20th century--Congresses.
Yugoslavia--Politics and government--20th century--Congresses.