Columbia subject headings:
Harvard subject headings:
Anarchism--Spain--Aragon--History.
Aragon (Spain)--Politics and government.
Samblancat, Angel.
Socialism--Spain--Aragon--History.
Princeton subject headings:
Anarchism--Spain--Aragon--History.
Aragon (Spain)--Politics and government.
Samblancat, Angel.
Socialism--Spain--Aragon--History.