Columbia subject headings:
La Rioja (Argentina : Province)--History.
La Rioja (Argentina : Province)--Politics and government.
Harvard subject headings:
La Rioja (Argentina : Province)--History.
La Rioja (Argentina : Province)--Politics and government.
Princeton subject headings:
La Rioja (Argentina : Province)--History.
La Rioja (Argentina : Province)--Politics and government.