1. J. O’M. Bockris, Environment
12, 51 (1971).
2. J. O’M. Bockris and J. Appleby, Environment This Month, 29 (July 1972).
3. J. B. S. Haldane, in a lecture, Daedalus or science of the future, at Cambridge, 4 February 1923.
4. F. Lawaczeck (1930), quoted by E. W. Justi in ref. 6; also in private communication, 6 May 1974.
5. J. O’M. Bockris, Westinghouse Co., Pittsburgh, Pennsylvania, 1962.