约 274,000 个结果
在新选项卡中打开链接
Holstein Friesian - Wikipedia
Holstein Cattle Breed: Facts, Uses, Origins & Characteristics
Holstein - The Cattle Site
Holstein Cattle Breed Spotlight
Holstein 101
History of dairy cow breeds: Holstein - MSU Extension
Holstein-Friesian | Dairy Cattle, Milk Production & Breeding
Holstein Association USA, The World's Largest Dairy Cattle Breed ...
History of the Holstein Breed