1. Diluting Bull Semen on the Basis of Numbers of Spermatozoa Rather than by Volume. (Abs.);Branton;J. Dairy Sci.,1949
2. Heat During Pregnancy in Dairy Cows;Donald;Vet. Record,1943
3. Comparison Between Intracervical and Intrauterine Methods of Artificial Insemination;Holt;Vet. Record,1946
4. The Relation of Site of Semen Deposit to Breeding Efficiency of Dairy Cattle;Knight;J. Dairy Sci.,1951
5. Lasley, J. F., and Bogart, R. Some Factors Influencing Reproductive Efficiency of Range Cattle Under Artificial and Natural Breeding Conditions. Mo. Agr. Expt. Sta. Research Bull. 376. 1943.