Columbia subject headings:
Harvard subject headings:
Guerrero (Mexico : State)--Antiquities--Congresses.
Indians of Mexico--Mexico--Guerrero (State)--Antiquities--Congresses.
Indians of Mexico--Mexico--Guerrero (State)--History--Congresses.
Mexico--Antiquities--Congresses.
Princeton subject headings:
Guerrero (Mexico : State)--Antiquities--Congresses.
Indians of Mexico--Mexico--Guerrero (State)--Antiquities--Congresses.
Indians of Mexico--Mexico--Guerrero (State)--History--Congresses.
Mexico--Antiquities--Congresses.