Ladyka, V. I. and Khmelnychyi, S. L. (2022) “AGE PARAMETERS OF LINEAR GROWTH OF HEIFERS OF SUMY INTRABREED TYPE OF UKRAINIAN BLACK-AND-WHITE DAIRY BREED”, Bulletin of Sumy National Agrarian University. The series: Livestock, (4 (47), pp. 3-6. doi: 10.32845/bsnau.lvst.2021.4.1.