Columbia subject headings:
City planning--Portugal--Lisbon--History--20th century.
City planning--Portugal--Lisbon--History--21st century.
Commercial buildings--Portugal--Lisbon.
Harvard subject headings:
City planning--Portugal--Lisbon--History--20th century.
City planning--Portugal--Lisbon--History--21st century.
Commercial buildings--Portugal--Lisbon.
Princeton subject headings:
City planning--Portugal--Lisbon--History--20th century.
City planning--Portugal--Lisbon--History--21st century.
Commercial buildings--Portugal--Lisbon.