Columbia subject headings:
Indians of Mexico.
Yucatán Peninsula--Peten--Description and travel.
Yucatán Peninsula--Peten--Social life and customs.
Harvard subject headings:
Avendano y Loyola, Andres de.
Indians of Central America--History--Sources.
Itza Indians--History--Sources.
Petén (Guatemala : Dept.)--History--Sources.
Princeton subject headings:
Indians of Mexico.
Petén (Guatemala : Dept.)--Description and travel.
Petén (Guatemala : Dept.)--Social life and customs.