Columbia subject headings:
Agricultural colonies--Peru--Perene River Valley--History.
Peruvian Corporation--History.
Harvard subject headings:
Agricultural colonies--Peru--Perene River Valley--History.
Coffee industry--Peru--Perene River Valley--History.
Perene River Valley (Peru)--History.
Peruvian Corporation--History.
Princeton subject headings:
Agricultural colonies--Peru--Perene River Valley--History.
Peruvian Corporation--History.