Columbia subject headings:
Architecture--Argentina--Calchaqui River Valley--History.
Church architecture--Argentina--Calchaqui River Valley--History.
Harvard subject headings:
Architecture--Argentina--Calchaqui River Valley--History.
Architecture--Argentina--Calchaqui River Valley.
Princeton subject headings:
Architecture--Argentina--Calchaqui River Valley--History.
Church architecture--Argentina--Calchaqui River Valley--History.