1. Milking procedures and their effect on milk quality;Armstrong,1985
2. The control of coliform mastitis;Bramley,1985
3. Milking procedures and cow management;Bringe,1979
4. Mastitis problem herds;Britt;J. Am. Vet. Med. Assoc.,1977
5. Practical hygiene control of milk contamination and udder infections;Bushnell,1984