Columbia subject headings:
Harvard subject headings:
Drug enforcement agents--United States--Biography.
Drug traffic--Investigation--United States
Drug traffic--United States--Prevention.
Follis, Edward.
United States. Drug Enforcement Administration--History.
Princeton subject headings:
Drug enforcement agents--United States--Biography.
Drug traffic--Investigation--United States.
Drug traffic--United States--Prevention.
Follis, Edward.
United States. Drug Enforcement Administration--History.