Zhumanov Kanat Zheksembekovich и Baimukanov Aidar Dastanbekuly (2020) «DAIRY PRODUCTIVITY OF COWS OF THE HOLSTEIN BLACK-AND-WHITE CATTLE OF THE KAZAKHSTAN POPULATION», Academic Journal of Physical and Chemical Sciences, (6), сс. 109–114. доступно на: https://journals.nauka-nanrk.kz/reports-science/article/view/1071 (просмотрено: 5 декабрь 2025).