Columbia subject headings:
Sociedades Económicas de Amigos del País--History--Sources.
Spain--Economic conditions--Sources.
Spain--History--Bourbons, 1700---Sources.
Harvard subject headings:
Associations, institutions, etc.--Spain--History.
Economics--Societies, etc.
Spain--Economic conditions--Societies, etc.--History.
Princeton subject headings:
Associations, institutions, etc.--Spain--History--18th century--Sources.
Spain--Economic conditions--18th century--Societies, etc.--History--Sources.
Spain--Economic policy--Societies, etc.--History--18th century--Sources.
Spain--History--Bourbons, 1700---Sources.
Spain--Social policy--Societies, etc.--History--18th century--Sources.