Columbia subject headings:
Economic development--International cooperation--Congresses.
Non-governmental organizations--Peru--Congresses.
Peru--Economic conditions--1968---Congresses.
Harvard subject headings:
Economic development--International cooperation--Congresses
Non-governmental organizations--Peru--Congresses.
Peru--Economic conditions--1968---Congresses.
Princeton subject headings:
Economic development--International cooperation--Congresses.
Non-governmental organizations--Peru--Congresses.
Peru--Economic conditions--1968---Congresses.