Columbia subject headings:
Documentary photography--Portugal--Lisbon.
Lisbon (Portugal)--History--Pictorial works.
Portugal--History--Revolution, 1974--Pictorial works.
Harvard subject headings:
Documentary photography--Portugal--Lisbon.
Lisbon (Portugal)--History--Pictorial works.
Portugal--History--Revolution, 1974--Pictorial works.
Princeton subject headings:
Documentary photography--Portugal--Lisbon.
Lisbon (Portugal)--History--Pictorial works.
Portugal--History--Revolution, 1974--Pictorial works.