Columbia subject headings:
Air quality--Congresses.
Architecture--Environmental aspects--Congresses.
Public spaces--Congresses.
Sustainable design--Congresses.
Harvard subject headings:
Air quality--Congresses.
Architecture--Environmental aspects--Congresses
Public spaces--Congresses.
Sustainable design--Congresses.
Princeton subject headings:
Air quality--Congresses.
Architecture--Environmental aspects--Congresses.
Public spaces--Congresses.
Sustainable design--Congresses.