Columbia subject headings:
Architect-designed houses--Portugal.
Architects--Homes and haunts--Portugal.
Costa, Alexandre Alves--Homes and haunts--Portugal.
Harvard subject headings:
Architect-designed houses--Portugal.
Architects--Homes and haunts--Portugal.
Costa, Alexandre Alves--Homes and haunts--Portugal.
Princeton subject headings:
Architect-designed houses--Portugal.
Architects--Homes and haunts--Portugal.
Costa, Alexandre Alves--Homes and haunts--Portugal.