1. BANG B. Die Aetiologie des seuchenhaften (infectiösen) Verwerfens.
Zeit Med. Band I, S. 241, 1897. Das seuchenhaften Verwerfen der
Rinder. Arch. wiss. u. prakt. Thierheilk., Band 33, S. 312, 1907.
2. LAW, JAMES. Contagious Abortion of Cows. Circular No. 5, Agr.
Experiment Sta. University of California, June, 1903.
3. Report of English Commission of Epizootic Abortion. Appendix to
Part I, p. 17, 1909.
4. HADLEY, F. B., and LOTHE, H. The Bull as a Disseminator of
Contagious Abortion. Jour. Amer. Vet. Med. Assoc., L, 1916–17, p.
143.
5. HADLEY, F. B. Contagious Abortion Questions Answered. Bulletin No.
296, Oct. 1921, Agr. Experiment Sta., University of Wisconsin.
6. BUCK, J. M., CREECH, G. T., and LADSON, H. H. Bacterium Abortus
Infection of Bulls (Preliminary Report). Jour. Agr. Research,
August, 1919.
7. SCHROEDER, E. C., and COTTON, W. E. The Bull as a Factor in
Abortion Disease.