HAGAN, WILLIAM A. “ΑΙ ΠΡΟΟΔΟΙ ΤΗΣ ΚΤΗΝΙΑΤΡΙΚΗΣ ΕΝ ΑΜΕΡΙΚΗ”. Journal of the Hellenic Veterinary Medical Society 5, no. 2 (April 1, 1954): 597–606. Accessed April 6, 2025. https://ejournals.epublishing.ekt.gr/index.php/jhvms/article/view/17587.