Columbia subject headings:
Architecture, Domestic--Portugal.
Architecture, Domestic--Spain.
Vernacular architecture--Portugal.
Vernacular architecture--Spain.
Villages--Portugal.
Villages--Spain.
Harvard subject headings:
Vernacular architecture--Iberian Peninsula.
Vernacular architecture--Portugal.
Vernacular architecture--Spain.
Princeton subject headings:
Architecture, Domestic--Portugal.
Architecture, Domestic--Spain.
Vernacular architecture--Portugal.
Vernacular architecture--Spain.
Villages--Portugal.
Villages--Spain.