1. Post Partum Estrus and Involution of the Uterus in an Experimental Herd of Holstein-Friesian Cows;Buch;J. Dairy Sci.,1955
2. The Ration Age of Calving as Factors Influencing the Growth and Dairy Qualities of Cows;Eckles;Missouri Agr. Expt. Sta., Bull,1915
3. Feeds and Feeding;Morrison,1956
4. Growth Standards for Dairy Cattle;Ragsdale;Missouri Agr. Expt. Sta., Bull,1934
5. The Relation of Feeding and Age of Calving to the Development of Dairy Heifers;Reed;Kansas Agr. Expt. Sta., Bull,1924