1. Ace, D. L. 1973. One calf out of four never reaches a year. Hoard's Dairyman. Aug. 25. p. 981.
2. Hagan, A. R., E. Wiggens, and M. Fausett. 1970. Missouri dairy farms, requirements and returns. SRl16. Agr. Exp. Sta. University of Missouri, Columbia, p. 17.
3. Calf losses in Illinois Dairy Herd Improvement herds;Johnson;J. Dairy Sci.,1970
4. Factors influencing dairy calf mortality in Michigan;Oxender;J. Amer. Vet. Med. Ass.,1973
5. Recent calf nutrition developments;Schugel,1973