Columbia subject headings:
Borderlands--China--Yunnan Sheng.
Drug abuse and crime--China--Yunnan Sheng.
Drug abuse--Social aspects--China--Yunnan Sheng.
Drug control--China--Yunnan Sheng.
Harvard subject headings:
Drug traffic--China--Yunnan Sheng.
Drugs of abuse--Law and legislation--China--Yunnan Sheng--Criminal provisions.
Narcotic laws--China--Yunnan Sheng--Criminal provisions.
Princeton subject headings: