PLANSKY, Vladimir; HRISTOV, Kalin. SEASON OF DELIVERY, AGE OF FIRST FERTILISATION AND MILKING YIELD DURING THE FIRST LACTATION PERIOD OF HEIFERS. TRADITION AND MODERNITY IN VETERINARY MEDICINE, [S. l.], v. 5, n. 1, p. 53–57, 2020. DOI: 10.5281/zenodo.3675468. Disponível em: https://scij-tmvm.com/index.php/pub/article/view/117. Acesso em: 27 aug. 2026.