McKinnon, Angus O. Squires, Edward L. Vaala, Wendy E. Varner, Dickson D. Equine reproduction: Volume 1 - 2nd ed. - Chichester, Wiley-Blackwell, 2011 - 1648p.; ISBN: 9780813819716 Subjects--Topical Terms: HorsesPregnancyFoalsCongenital abnormalities Dewey Class. No.: 636.108