Columbia subject headings:
Maya astronomy.
Mayan languages--Writing.
Palenque (Chiapas, Mexico)--Antiquities.
Harvard subject headings:
Maya astronomy.
Mayan languages--Writing
Palenque (Chiapas, Mexico)--Antiquities.
Palenque Site (Mexico)
Princeton subject headings:
Maya astronomy.
Mayan languages--Writing.
Palenque (Chiapas, Mexico)--Antiquities.