1. Barnum, D. A., D. A. Biggs, D. M. Irvine, and J. C. Rennie. 1969. A Study of milk composition in Ontario. Ontario Dep. Agr., Canada. Part I.
2. Estimates of genetic parameters for milk constituents and yields;Butcher;J. Dairy Sci.,1967
3. Genetic and environmental parameters of milk constituents for five breeds. I. Effects of herd, year, season, and age of cow;Gacula;J. Dairy Sci.,1968
4. Variation in milk constituents and milk yield for five breeds of dairy cattle;Gaunt,1966
5. Repeatability of monthly and bi-monthly lactation records of milk, protein, solids-not-fat, milk fat, and total solids for five breeds of cattle;Gaunt;J. Dairy Sci.,1963