Columbia subject headings:
Adult education--Andes Region--Congresses.
Agricultural laborers--Education--Andes Region--Societies, etc.--Congresses.
Indians of South America--Education--Andes Region--Societies, etc.--Congresses.
Land reform--Andes Region--Congresses.
Harvard subject headings:
Princeton subject headings:
Communication in agriculture--South America--Congresses.
Communication in community development--South America--Congresses.
Land reform--South America--Congresses.
Peasants--Education--South America--Congresses.
Peasants--South America--Political activity--Congresses.