1. The effect of penicillin on staphylococci and streptococci commonly associated with bovine mastitis;Foley;J. Food Technol.,1946
2. Use of antimicrobial drugs in veterinary practice;Johnston;BMJ,1998
3. Antibiotics, animal, meat and milk;Walton;Zbl. Vet. A,1983
4. Microbial antibiotic resistance in relation to food safety. Report of the Advisory Committee on the Microbiological Safety of food, The Stationary Office, London, 1999.
5. Preventative methods replace antibiotic growth promoters: ten years experience in Sweden;Weirup;APUA Newsl.,1998