1. Evaluating fertility and evaluating semen;Crabo,1983
2. Combinations of natural service and artificial insemination in swine breeding programs;Flowers;J Anim Sci,1990
3. Boar semen: Transmission and detection of viruses;Gradil,1991
4. Artificial insemination with fresh semen;Hagen,1986
5. Commercial swine AI with liquid semen in Norway;Hofmo,1991