BETA-CASEIN GENE POLYMORPHISM IN SERBIAN HOLSTEIN-FRIESIAN COWS AND ITS RELATIONSHIP WITH MILK PRODUCTION TRAITS. - Marko, RISTANIC; Uros, GLAVINIC; Branislav, VEJNOVIC; Milan, MALETIC; Danijela, KIROVSKI; Vlado, TEODOROVIC; Zoran, STANIMIROVIC (Acta Veterinaria, 2020)