Columbia subject headings:
Energy conservation--United States.
Landscape architecture and energy conservation.
Trees in cities--United States.
Urban climatology--United States.
Harvard subject headings:
Energy conservation--United States
Landscape architecture and energy conservation.
Trees in cities--United States.
Urban climatology--United States.
Princeton subject headings:
Energy conservation--United States.
Landscape architecture and energy conservation.
Trees in cities--United States.
Urban climatology--United States.