1. The flora of the respiratory tract in chronic disease;May, JR;Postgrad MedJ,1975
2. Aspects of serum and sputum antibody in chronic airways obstruction;Clarke, C.W.;Thorax,1976
3. Role of infection in chronic bronchitis;Tager 1, Speizer FE;New Engl J Med,1975
4. The relevance of bacteriology tests to the clinical use of antibiotics in domiciliary practice;Bell, S.;J Antimicrob Chemother,1976
5. Bronchial obstructive reactions and Haemophilus influenzae. Second edition;der Zwan JC, Van,1977