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Holstein Friesian - Wikipedia
Holstein Cattle Breed: Facts, Uses, Origins & Characteristics
Holstein - The Cattle Site
Holstein-Friesian | Dairy Cattle, Milk Production & Breeding
Holstein 101
History of dairy cow breeds: Holstein - MSU Extension
Holstein Association USA, The World's Largest Dairy Cattle Breed ...
History of the Holstein Breed
Holstein Cows – Breed Profile, Facts and Care - YouTube
Holstein Cattle Breed Spotlight