Columbia subject headings:
Harvard subject headings:
Agriculture--Economic aspects--Amazon River Region.
Agriculture--Economic aspects--Peru
Amazon River Region--Colonization.
Land settlement--Amazon River Region
Land settlement--Peru.
Peru--Colonization.
Princeton subject headings:
Agriculture--Economic aspects--Amazon River Region.
Agriculture--Economic aspects--Peru.
Amazon River Region--Colonization.
Land settlement--Amazon River Region.
Land settlement--Peru.
Peru--Colonization.