Columbia subject headings:
Harvard subject headings:
Community development--Germany--Westphalia.
Community gardens--Germany--Westphalia.
Social action--Germany--Westphalia.
Urban gardens--Germany--Westphalia.
Princeton subject headings:
Community development--Germany--Westphalia.
Community gardens--Germany--Westphalia.
Social action--Germany--Westphalia.
Urban gardens--Germany--Westphalia.