Columbia subject headings:
Andes Region--Social conditions.
Regional planning--Andes Region.
Rural development--Andes Region.
Social change.
Technological innovations--Andes Region.
Harvard subject headings:
Andes Region (Peru)--Social conditions.
Andes Region--Rural conditions.
Regional planning--Peru--Andes Region.
Rural development--Peru--Andes Region.
Social change.
Technological innovations--Peru--Andes Region.
Princeton subject headings:
Agricultural innovations--Peru.
Agricultural productivity--Peru.
Agriculture--Economic aspects--Peru.
Agriculture--Social aspects--Peru.
Andes Region--Rural conditions.
Land tenure--Peru.
Land use--Peru.
Peasants--Peru--Andes Region.
Peru--Rural conditions.