Columbia subject headings:
Harvard subject headings:
Huastec Indians--History--Congresses.
Huastec Indians--Politics and government--Congresses.
Huastec Indians--Social life and customs--Congresses.
Princeton subject headings:
Huasteca Region (Mexico)--History--Congresses.
Huasteca Region (Mexico)--Rural conditions--Congresses.
Huasteca Region (Mexico)--Social conditions--Congresses.
Peasants--Mexico--Huasteca Region--Congresses.