Columbia subject headings:
Harvard subject headings:
Drug abuse counseling--Research--Congresses.
Drug abuse--Treatment--Research--Congresses.
Drug addicts--Rehabilitation--Research--Congresses.
Psychotherapy--Research--Congresses.
Princeton subject headings:
Drug abuse counseling--Research--Congresses.
Drug abuse--Treatment--Research--Congresses.
Drug addicts--Rehabilitation--Research--Congresses.
Psychotherapy--Research--Congresses.