Columbia subject headings:
Harvard subject headings:
Language policy--Spain--History--20th century.
Language policy--Spain--History--21st century.
Spain--Languages--History--20th century.
Spain--Languages--History--21st century.
Spain--Languages--Law and legislation.
Princeton subject headings:
Language policy--Spain.
Linguistic minorities--Spain.
Multilingualism--Spain.
Spain--Languages--Law and legislation.
Spain--Languages--Political aspects.
Spanish autonomous communities--Politics and government.
Spanish language--Standardization.