Thompson, P D Effects of physical characteristics of milking machines on teats and udders. [electronic resource] - Journal of the American Veterinary Medical Association May 1977 - 1150-4 p. digital Publication Type: Journal Article ISSN: 0003-1488 Subjects--Topical Terms: AnimalsCattle--anatomy & histologyDairying--instrumentationFemaleMammary Glands, Animal--anatomy & histologyMastitis, Bovine--microbiologyMilkModels, Biological