1. Baker, F. N., VanDemark, N. L., Salisbury, G. W., and VanTienhoven, A., J. Animal Sci., 11, 788 (1952). Salisbury, G. W., and Kinney, jun., W. C. (unpublished results, 1953). Kinney, jun., W. C., M.S. thesis, University of Illinois (1954).
2. VanDemark, N. L., and Sharma, U. D., J. Dairy Sci., 40, 438 (1957).