Sulphur dioxide, acid aerosols and particulates / Departament of Health. Advisory Group on the Medical Aspects of Air Pollution Episodes. — London : HMSO, 1992. — CIDIMA. — 157 p. : tab. ; 30 cm. — ISBN 0-11-321532-0 1. Contaminación atmosférica.2. Aerosoles.3. Partículas. I. Departament of Health. Advisory Group on the Medical Aspects of Air Pollution Episodes. 504.3.054