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2. Use of pressurised aerosols by asthmatic patients;Patterson, I.C.; Crompton, S.K.,1976
3. Fluorocarbon aerosol propellants;Anonymous;Lancet; Wet or dry inhalers,1975
4. Chlorofluorocarbons-in the can, in man and in the atmosphere;McLean, A.E.M.;Br Jf Clin Pharmacol,1977
5. In: Respiratory illness in children;Williams, H.E.; Asthma, Phelan P.D.,1975