Columbia subject headings:
Community development, Urban--Environmental aspects--United States.
Gateways--Environmental aspects--United States.
Rural development--Environmental aspects--United States.
Urban ecology (Sociology)--United States.
Harvard subject headings:
Community development, Urban--Environmental aspects--United States.
Community development--Environmental aspects--United States.
Community-based conservation--United States.
Conservation of natural resources--Social aspects--United States.
Gateways--Environmental aspects--United States.
Land use, Rural--Environmental aspects--United States.
Rural development--Environmental aspects--United States.
Sustainable development--United States
Urban ecology (Sociology)--Environmental aspects--United States.
Princeton subject headings:
Community development, Urban--Environmental aspects--United States.
Gateways--Environmental aspects--United States.
Rural development--Environmental aspects--United States.
Urban ecology (Sociology)--Environmental aspects--United States.