Columbia subject headings:
Agriculture, Cooperative--Peru--History--20th century.
Land reform--Peru--History--20th century.
Land tenure--Peru--History--20th century.
Harvard subject headings:
Agriculture, Cooperative--Peru--History--20th century.
Land reform--Peru--History--20th century.
Land tenure--Peru--History--20th century.
Princeton subject headings:
Agriculture, Cooperative--Peru.
Land reform--Peru.