1. General abortion references
2. A survey of causes of bovine abortion occurring in the San Joaquin Valley, California;Anderson;J Vet Diag Invest,1990
3. Diagnostic studies of the fetus, placenta and maternal blood from 265 bovine abortions;Jerrett;Cornell Vet.,1984
4. A diagnostic survey of bovine abortion and stillbirth in the northern plains states;Kirkbride;J Am Vet Med Assoc,1973
5. Viral agents and associated lesions detected in a 10-year study of bovine abortion and stillbirths;Kirkbride;J Vet Diagn Invest,1992