1. Sources of variation in monthly and twelve-month rolling DHIA herd average milk and fat yields;Conlin;J. Dairy 8ci.,1964
2. Corley, E. L., G. R. Barr, D. A. Wieckert, E. E. Heizer, and C. E. Kraemer. 1964. Environmental influences on production in 46 dairy herds. Res. Bull. 253, Wisconsin Agr. Exp. Sta., Madison. 64 pp.
3. Reliability of environmental data collected under field conditions;Corley;J. Dairy Sci.,1960
4. Applied Regression Analysis;Draper,1966
5. Effect of certain environmental factors upon milk production in Georgia;Fosgate;J. Dairy Sci.,1960