Columbia subject headings:
Peru--History, Naval.
Spain--Colonies--America--Defenses.
Spain--History, Naval.
Spain. Armada--History--17th century.
Spain. Armada--History--18th century.
Harvard subject headings:
Peru--History, Naval.
Spain--Colonies--America--Defenses.
Spain--Colonies--Defenses--America.
Spain--History, Naval.
Spain. Armada--History--17th century.
Spain. Armada--History--18th century.
Princeton subject headings:
Peru--Defenses--History.
Peru--History, Naval.
Spain--History, Naval.
Spain. Armada--History--17th century.
Spain. Armada--History--18th century.