1. Rank Order in Cows;Dietrich;American Zool.,1965
2. Means and Method for Tending Domestic Animals;Etter;Off. Gaz. U. S. Pat. Off.,1964
3. Higher Nervous Activity and the Physiology of the Senses in Lactating Cows;Kudryavtzev;Intern. Dairy Congr.,1962
4. Social Dominance and Its Effect on Supplementation of Range Cows. Beef Day;Wagnon,1965