Shephard, Roy J. The risks of passive smoking / Roy J. Shephard. - London : Croom Helm, c1982. - 195 p. : ill ; 23 cm. Bibliography: p. 160-191. - Includes index. ISBN: 0709923341 Subjects--Topical Terms: Passive smoking.Tobacco--Physiological effect Dewey Class. No.: 613.85