Columbia subject headings:
Drug abuse and crime--Case studies.
Drug control--Mexico--Case studies.
Drug control--United States--Case studies.
Drug enforcement agents--United States--Case studies.
Harvard subject headings:
Drug abuse and crime--Case studies.
Drug control--Mexico--Case studies.
Drug control--United States--Case studies.
Drug enforcement agents--United States--Case studies.
Princeton subject headings:
Drug abuse and crime--Case studies.
Drug control--Mexico--Case studies.
Drug control--United States--Case studies.
Drug enforcement agents--United States--Case studies.
Drug traffic--Case studies.