Columbia subject headings:
Harvard subject headings:
Mexican-American Border Region--Economic integration--Environmental aspects--Congresses.
San Diego (Calif.)--Environmental conditions--Congresses.
Sustainable development--California--San Diego--Congresses.
Sustainable development--Mexican-American Border Region--Congresses.
Sustainable development--Mexico--Tijuana (Baja California)--Congresses.
Tijuana (Baja California, Mexico)--Environmental conditions--Congresses.
Princeton subject headings:
Mexican-American Border Region--Economic integration--Environmental aspects--Congresses.
San Diego (Calif.)--Environmental conditions--Congresses.
Sustainable development--California--San Diego--Congresses.
Sustainable development--Mexican-American Border Region--Congresses.
Sustainable development--Mexico--Tijuana (Baja California)--Congresses.
Tijuana (Baja California, Mexico)--Environmental conditions--Congresses.