Columbia subject headings:
Harvard subject headings:
Botany, Economic--Mexico--Cuautinchán.
Botany, Economic--Mexico--Puebla.
Botany, Economic--Mexico--Tlaxcala.
Botany--Mexico
Botany--Mexico--Classification.
Botany--Mexico--Identification.
Botany--Utilization--Mexico.
Materia medica, Vegetable--Mexico--Cuautinchán.
Medicinal plants--Mexico--Cuautinchán.
Plants, Useful--Mexico--Cuautinchán.
Plants, Useful--Mexico--Puebla.
Plants, Useful--Mexico--Tlaxcala.
Plants--Mexico--Classification.
Plants--Mexico--Identification.
Princeton subject headings:
Botany, Economic--Mexico--Puebla (State).
Botany, Economic--Mexico--Tlaxcala (State).
Botany--Mexico--Puebla (State).
Botany--Mexico--Tlaxcala (State).