Columbia subject headings:
Architecture, Domestic--Portugal--History--19th century.
Architecture, Domestic--Portugal--History--20th century.
Historic buildings--Portugal.
Harvard subject headings:
Architecture, Domestic--Portugal--History--19th century.
Architecture, Domestic--Portugal--History--20th century.
Historic buildings--Portugal.
Princeton subject headings:
Architecture, Domestic--Portugal--History--19th century.
Architecture, Domestic--Portugal--History--20th century.
Historic buildings--Portugal.