Ramazanovich Feyzullayev, Feyzullah, Vadim Anatolyevich Babushkin, Anatoly Vladimirovich Bakai, and Tatiana Viktorovna Lepekhina. “Milk Productivity of Black-Motley Cows With Easy and Troubled Calvings”. International Journal of Engineering & Technology 7, no. 4.38 (December 3, 2018): 1115–1117. Accessed May 3, 2024. https://www.sciencepubco.com/index.php/ijet/article/view/27653.