Columbia subject headings:
Materia medica, Vegetable--China.
Oral contraceptives--Research--China.
Steroid hormone industry--China.
Steroid hormones--Research--China.
Harvard subject headings:
Materia medica, Vegetable--China.
Oral contraceptives--Research--China.
Steroid hormone industry--China.
Steroid hormones--Research--China.
Princeton subject headings:
Materia medica, Vegetable--China.
Oral contraceptives--Research--China.
Steroid hormone industry--China.
Steroid hormones--Research--China.