Columbia subject headings:
Finance, Public--Spain--History--Congresses.
Spain--Economic conditions--Congresses.
Tax administration and procedure--Spain--History--Congresses.
Taxation--Spain--History--Congresses.
Harvard subject headings:
Finance, Public--Spain--History--Congresses.
Spain--Economic conditions--Congresses.
Tax administration and procedure--Spain--History--Congresses.
Taxation--Spain--History--Congresses.
Princeton subject headings:
Finance, Public--Spain--History--Congresses.
Spain--Economic conditions--Congresses.
Tax administration and procedure--Spain--History--Congresses.
Taxation--Spain--History--Congresses.