Columbia subject headings:
Crusades.
Europe--Politics and government--476-1492.
Speeches, addresses, etc., Latin (Medieval and modern)
Harvard subject headings:
Crusades--13th-15th centuries
Europe--Politics and government--476-1492.
Speeches, addresses, etc., Latin (Medieval and modern)
Princeton subject headings:
Crusades.
Europe--Politics and government--476-1492.
Speeches, addresses, etc., Latin (Medieval and modern)