1. Disease registrations on pigs at slaughter as a method of preventative and therapeutic veterinary medicine in Swine production;Backstrom;Svensk Vet. Tidu.,1976
2. The relationship between disease incidences of fatteners registered at slaughter and environmental factors in herds;Backstrom;Nord. Vet. Med.,1978
3. Effect of ascariasis and respiratory diseases of growth rates in swine;Bernardo;Can. J. Vet. Res.,1990
4. Housing and environmental influences on production;Curtis,1986
5. Animal productivity and health information network;Dohoo;Can. Vet. J.,1988