Columbia subject headings:
City planning--History--20th century.
City planning--History--21st century.
Urban landscape architecture--History--20th century.
Urban landscape architecture--History--21st century.
Harvard subject headings:
City planning--History--20th century
City planning--History--21st century.
Urban landscape architecture--History--20th century.
Urban landscape architecture--History--21st century.
Princeton subject headings:
City planning--History--20th century.
City planning--History--21st century.
Urban landscape architecture--History--20th century.
Urban landscape architecture--History--21st century.