1. BILLE, N., NIELSEN, N.C., SVENDSEN, J. and RIISING, H-J., (1974). Report of 3rd International Pig Veterinary Congress, Lyons, France, June 12–14. ESPIC, Toulouse
2. Salmonella typhimurium infection in a hysterectomy-produced heard of pigs
3. Methods of reducing the incidence of udder infection in dry cows
4. SVENDSEN, J., LARSEN, J.L., BILLE, N. and NIELSEN, N.C., (1974). Report of 3rd International Pig Veterinary Congress, Lyons, France, June 12–14. ESPIC, Toulouse