Columbia subject headings:
Hungary--Foreign relations--Romania.
Hungary--Foreign relations--Slovakia.
Minorities--Hungary.
Romania--Foreign relations--Hungary.
Slovakia--Foreign relations--Hungary.
Harvard subject headings:
Hungary--Foreign relations--Romania
Hungary--Foreign relations--Slovakia.
Minorities--Hungary
Romania--Foreign relations--Hungary.
Slovakia--Foreign relations--Hungary.
Princeton subject headings:
Hungary--Foreign relations--Romania.
Hungary--Foreign relations--Slovakia.
Minorities--Hungary.
Romania--Foreign relations--Hungary.
Slovakia--Foreign relations--Hungary.