Columbia subject headings:
Galicia (Spain : Region)--Emigration and immigration--History--19th century--Congresses.
Galicians (Spain)--Portugal--History--Congresses.
Portugal--Emigration and immigration--History--Congresses.
Harvard subject headings:
Galicia (Spain : Region)--Emigration and immigration--History--19th century--Congresses.
Galicians (Spain)--Portugal--History--Congresses.
Portugal--Emigration and immigration--History--Congresses.
Princeton subject headings:
Galicia (Spain : Region)--Emigration and immigration--History--19th century--Congresses.
Galicians (Spain)--Portugal--History--Congresses.
Portugal--Emigration and immigration--History--Congresses.