"Micro Smokerlyzer" carbon monoxide kit for use as a health education measure to discourage cigarette smoking, in carrying case with 1000 disposable mouthpieces, spare pack of sampling systems, calibration unit, leaflets and training video, by Bedfont Technical Instruments Ltd, Sittingbourne, Kent, 1992 "Micro Smokerlyzer" carbon monoxide kit for use as a health education measure to discourage cigarette smoking 1992