Columbia subject headings:
City planning--Switzerland--Basel.
City planning--Switzerland.
Gardens--Switzerland--Basel.
Open spaces--Switzerland--Basel.
Harvard subject headings:
City planning--Switzerland
City planning--Switzerland--Basel.
Gardens--Switzerland--Basel.
Open spaces--Switzerland--Basel.
Princeton subject headings:
City planning--Switzerland--Basel.
Gardens--Switzerland--Basel.
Greenbelts--Switzerland--Basel.
Open spaces--Switzerland--Basel.