Columbia subject headings:
Epidemics--Mexico--Mexico City--History--18th century.
Mexico City (Mexico)--History--18th century.
Natural disasters--Mexico--Mexico City--History--18th century.
Harvard subject headings:
Epidemics--Mexico--Mexico City--History--18th century.
Mexico City (Mexico)--History--18th century.
Natural disasters--Mexico--Mexico City--History--18th century.
Princeton subject headings:
Epidemics--Mexico--Mexico City--History--18th century.
Mexico City (Mexico)--History--18th century.
Natural disasters--Mexico--Mexico City--History--18th century.