Columbia subject headings:
Correctional personnel--Health and hygiene--United States.
Drug traffic--United States.
Drugs--Law and legislation--United States.
Narcotic laws--United States.
Harvard subject headings:
Communicable diseases--Transmission--United States.
Correctional personnel--Health and hygiene--United States.
Correctional personnel--Legal status, laws, etc.--United States.
Drug traffic--Mexico
Drug traffic--United States
Drugs--Law and legislation--United States.
Narcotic laws--United States
Prisoners--Civil rights--United States.
Princeton subject headings:
Correctional personnel--Health and hygiene--United States.
Drug traffic--United States.
Drugs--Law and legislation--United States.
Narcotic laws--United States.