Columbia subject headings:
Africa--Politics and government--1960-
Central America--Politics and government--1979-
Colombia--Politics and government--1974-
Negotiation.
Peace.
Harvard subject headings:
Africa--Politics and government--1960---Congresses.
Central America--Politics and government--1979---Congresses.
Colombia--Politics and government--1974---Congresses.
Negotiation--Congresses.
Peace--Congresses
Princeton subject headings: