Columbia subject headings:
Bolivia--Foreign relations--Chile.
Chile--Foreign relations--Bolivia.
Chile--Foreign relations--Peru.
Peru--Foreign relations--Chile.
Tacna-Arica question.
Harvard subject headings:
Bolivia--Foreign relations--Chile.
Chile--Foreign relations--Bolivia.
Chile--Foreign relations--Peru.
Peru--Foreign relations--Chile.
Tacna-Arica question.
Princeton subject headings: