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P. made a statistical survey of 644 herds of cattle to assess the importance of V. fetus infection in bulls in causing abortion and infertility in cows. V. fetus was isolated from preputial washings and the seminal fluid of young bulls not yet used for breeding, and also of older bulls used with...

Pröger, K.
Monatshefte fur Veterinarmedizin, 1956, 11, pp 197-202; 224-226