Columbia subject headings:
Greenways--British Columbia.
Greenways--Italy.
Open spaces--British Columbia.
Open spaces--Italy.
Sustainable development--British Columbia.
Sustainable development--Italy.
Urban ecology (Sociology)--British Columbia.
Urban ecology (Sociology)--Italy.
Urban policy--British Columbia.
Urban policy--Italy.
Harvard subject headings:
Architecture--Environmental aspects--Canada.
Architecture--Environmental aspects--Italy.
Sustainable architecture--Canada.
Sustainable architecture--Italy.
Princeton subject headings: