1. Ambrose, E. J., and Easty, D. M., “Cell Biology,” pp. 479–480, Addison-Wesley, Reading, Mass., 1970.
2. Calvin, M., “Chemical Evolution,” pp. 162–183, Oxford University Press, 1969.
3. Carothers, W. H., Trans. Faraday Soc.
32, 39 (1936).
4. Crick, F.H.C., J. Mol. Biol.
38, 367 (1968).
5. CRM Books, “Biology—An Appreciation of Life,” pp. 51–52, Del Mar, Calif., 1972.