Letter from Willis Jackson, President, British Association for the Advancement of Science, Great Smith Street, London to Howard Walter Florey Gives titles of symposia to be held during the Association's Annual Meeting in Leeds in August/September 1967 - invites Florey to act as Chairman of the Symposium on population control on 5 September - says J D Carthy is organizing this - comments on this and on help offered by BBC. 31 October 1966