Columbia subject headings:
Smoking--Government policy--Europe--Congresses.
Tobacco use--Europe--Prevention--Congresses.
Harvard subject headings:
Smoking--Europe--Prevention--Congresses.
Smoking--Government policy--Europe--Congresses.
Princeton subject headings:
Medical policy--Europe--Congresses. & control--Europe--congresses.
Smoking--Europe--Congresses.
Tobacco use--Europe--Congresses.