1. Moloney, J. B., Some Recent Developments in Comparative Medicine (Academic Press, New York, 1966).
2. Moloney, J. B., J. Nat. Cancer Inst., Monog. 22, 139 (1966).
3. Hartley, J. W., and Rowe, W. P., Proc. US Nat. Acad. Sci., 55, 780 (1966).
4. Fischinger, P., Messore, J., and O'Connor, T., Proc. Amer. Assoc. Cancer Res., 8, 18 (1967).
5. Bernard, C., Boiron, M., and Lasneret, J., CR Acad. Sci., Paris, 264, 2170 (1967).