Columbia subject headings:
Harvard subject headings:
Borneo--History.
Mindanao Island (Philippines)--History.
Philippines--History.
Pirates
Sulu Archipelago (Philippines)--History.
Princeton subject headings:
Borneo--History.
Mindanao Island (Philippines)--History.
Philippines--History--Coup d'état, 1989.
Pirates.
Sulu Archipelago (Philippines)--History.