Columbia subject headings:
Communication in drug abuse prevention--United States--Handbooks, manuals, etc.
Drug abuse--United States--Prevention--Handbooks, manuals, etc.
Drugs and employment--United States--Prevention--Handbooks, manuals, etc.
Harvard subject headings:
Princeton subject headings:
Communication in drug abuse prevention--United States--Handbooks, manuals, etc.
Drug abuse--United States--Prevention--Handbooks, manuals, etc.
Employees--Drug use--United States--Prevention--Handbooks, manuals, etc.