Columbia subject headings:
Aztecs--Ethnobotany.
Aztecs--Sexual behavior.
Ethnobotany--Mexico--History.
Materia medica--Mexico--History.
Harvard subject headings:
Aztecs--Ethnobotany.
Aztecs--Sexual behavior.
Ethnobotany--Mexico--History.
Materia medica, Vegetable--Mexiko--History.
Princeton subject headings:
Aztecs--Ethnobotany.
Aztecs--Sexual behavior.
Ethnobotany--Mexico--History.
Materia medica, Vegetable--Mexico--History.