Columbia subject headings:
Harvard subject headings:
Environmental degradation--Mexico--Zacatecas (State)
Environmental policy--Mexico--Zacatecas.
Sustainability--Mexico--Zacatecas (State)
Zacatecas (Mexico)--Environmental conditions.
Princeton subject headings:
Environmental degradation--Mexico--Zacatecas (State).
Sustainability--Mexico--Zacatecas (State).