1. A Discussion of Penicillin and Related Antibiotics – Past, Present and Future, E. Chain and J. Stokes, Organizers, London, May 20–21, 1971. Proc. R. Soc. Lond. B., 179;
2. T. R. Carrington, 321;
3. D. H. R. Barton and P. G. Sammes, 345;
4. J. L. Strominger, P. M. Blumberg, H. Suginaka, J. Umbreit and G. G. Wickus, 369;
5. G. N. Rolinson, 403;