Columbia subject headings:
Harvard subject headings:
Architecture, Domestic--Portugal--Porto--Designs and plans.
Architecture, Domestic--Portugal--Porto--History--20th century.
Architecture, Domestic--Portugal--Porto--History--21st century.
São João de Deus (Porto, Portugal)--Buildings, structures, etc.
São João de Deus (Porto, Portugal)--Pictorial works.
Princeton subject headings:
Architecture, Domestic--Portugal--Porto--Designs and plans.
Architecture, Domestic--Portugal--Porto--History--20th century.
Architecture, Domestic--Portugal--Porto--History--21st century.
São João de Deus (Porto, Portugal)--Buildings, structures, etc.
São João de Deus (Porto, Portugal)--Pictorial works.