1. Paper presented at a Symposium on "Recent Developments in the Sterilization of Surgical Materials";Bowie, J.H.;Pharm. J,1961
2. Fallon, R. J. (1961). J. clin. Path., 14, 505.
3. Knox, R. (1961). Ibid, 14, 11.
4. Knox, R., and Penikett, E. J. K. (1958). Brit. med. J., 1, 680. Medical Research Council Working Party on Pressure-steam Sterillizers (1959). Lancet, 1, 425.