Columbia subject headings:
Romania--Foreign relations--1914-1944.
Romania--Foreign relations--Yugoslavia.
Yugoslavia--Foreign relations--1918-1945.
Yugoslavia--Foreign relations--Romania.
Harvard subject headings:
Romania--Foreign relations--1914-1944.
Romania--Foreign relations--Yugoslavia.
Yugoslavia--Foreign relations--1918-1945.
Yugoslavia--Foreign relations--Romania.
Princeton subject headings:
Romania--Foreign relations--Yugoslavia.
Yugoslavia--Foreign relations--Romania.