Columbia subject headings:
Harvard subject headings:
Andalusia (Spain)--Emigration and immigration--Congresses.
Andalusia (Spain)--Foreign relations--Mexico--Congresses.
Andalusia (Spain)--History--Congresses.
Mexico--Emigration and immigration--Congresses.
Mexico--Foreign relations--Spain--Andalusia--Congresses.
Mexico--History--Congresses.
Princeton subject headings:
Andalusia (Spain)--Emmigration and immigration--Congresses.
Andalusia (Spain)--Foreign relations--Mexico--Congresses.
Andalusia (Spain)--History--Congresses.
Mexico--Emmigration and immigration--Congresses.
Mexico--Foreign relations--Andalusia (Spain)--Congresses.
Mexico--History--Congresses.