Columbia subject headings:
Agricultural colonies--Europe--History.
Civilization, Medieval.
Civilization, Western.
Economic history--Medieval, 500-1500.
Europe--Rural conditions.
Slave labor--Europe--History.
Harvard subject headings:
Civilization, Medieval.
Economic history--Medieval, 500-1500
Feudalism--Europe
Land tenure--Europe
Princeton subject headings:
Agricultural colonies--Europe, Western--History.
Civilization, Medieval.
Civilization, Western.
Economic history--Medieval, 500-1500.
Europe--Rural conditions--History.
Slave labor--Europe, Western--History.