Sheep. Breeds and management Wrightson, John, 1840-1916 creator text book London Vinton & company, ltd 1919 1919 New and rev., 8th ed. with 48 illustrations.
print
ENG Sheep SF375 .W6 1919 Live stock handbooks, no. 1 https://www.biodiversitylibrary.org/bibliography/23228 10.5962/bhl.title.23228