Columbia subject headings:
Natural history--Mexico.
Urban ecology (Biology)--Mexico.
Urban ecology (Sociology)--Mexico.
Harvard subject headings:
Mexico City Region (Mexico)--Environmental conditions.
Urban ecology (Biology)--Mexico--Mexico City Region.
Princeton subject headings:
Animal ecology--Mexico--Mexico City Metropolitan Area.
Botany--Mexico--Mexico City Metropolitan Area--Ecology.
Human beings--Effect of climate on--Mexico--Mexico City Metropolitan Area.
Natural history--Mexico--Mexico City Metropolitan Area.
Urban ecology (Biology)--Mexico--Mexico City Metropolitan Area.