Columbia subject headings:
Colombia--Economic conditions--1970---Congresses.
Colombia--Economic policy--Congresses.
Colombia--Social conditions--1970---Congresses.
Colombia--Social policy--Congresses.
Harvard subject headings:
Colombia--Economic conditions--1970---Congresses.
Colombia--Economic policy--Congresses.
Colombia--Social conditions--1970---Congresses.
Colombia--Social policy--Congresses.
Princeton subject headings: