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pro vyhledávání: '"K L, Oslund"'
Publikováno v:
Journal of the American Veterinary Medical Association. 209(9)
A herd of 650 Holstein cows was examined for skin disease. Approximately 400 of the lactating adults were affected, but heifers, calves, and nonlactating cows were clinically normal. The condition was characteristic of primary photosensitization. Mil