Columbia subject headings:
Harvard subject headings:
City planning--Maryland--Greenbelt.
City planning--Ohio--Greenhills.
City planning--Wisconsin--Greendale.
Greenbelt (Md.)
Greenbelts.
Greendale (Wis.)
Greenhills (Ohio)
Princeton subject headings:
City planning--Maryland--Greenbelt.
City planning--Ohio--Greenhills.
City planning--Wisconsin--Greendale.
Greenbelts.