Columbia subject headings:
Agricultural laborers--Peru--Congresses.
Appropriate technology--Peru--Congresses.
Peasants--Peru--Congresses.
Harvard subject headings:
Agricultural laborers--Peru--Congresses.
Appropriate technology--Peru--Congresses.
Peasants--Peru--Congresses.
Princeton subject headings:
Agricultural systems--Andes Region--Congresses.
Industries--Andes Region--Congresses.
Peasants--Peru--Societies, etc.--Congresses.
Rural development--Andes Region--Congresses.