Columbia subject headings:
Botany--Mexico--History--18th century.
Chemistry--Mexico--History--18th century.
Pharmacy--Mexico--History--18th century.
Harvard subject headings:
Botany, Medical--Mexico--History.
Pharmaceutical chemistry--Mexico--History.
Princeton subject headings:
Botany--Mexico--History--18th century.
Chemistry--Mexico--History--18th century.
Pharmacy--Mexico--History--18th century.