Sterility in the Cow : Some Observations on Causes of the Condition most Frequently Encountered in the Practice of Veterinary Medicine * *The Thesis presented for the Degree of Fellowship of the Royal College of Veterinary Surgeons. (By permission of the Council of the R.C.V.S.)

The Veterinary Journal (1900) - Tập 89 - Trang 242-255 - 1933
J.F.D. Tutt1
1Winchester.

Tài liệu tham khảo

Nielsen, 1926