Columbia subject headings:
Belize--Antiquities.
Mayas--Social life and customs.
Obsidian mines and mining--Belize.
Obsidian mines and mining--Guatemala--Petén (Department)
Petén (Guatemala : Department)--Antiquities.
Harvard subject headings:
Belize--Antiquities.
Obsidian mines and mining--Belize.
Obsidian mines and mining--Guatemala--Petén (Department)
Petén (Guatemala : Department)--Antiquities.
Princeton subject headings:
Belize--Antiquities.
Mayas--Social life and customs.
Obsidian mines and mining--Belize.
Obsidian mines and mining--Guatemala--Petén (Dept.).
Petén (Guatemala : Dept.)--Antiquities.