СЕЙТКАМАЛОВ Х. THE STUDIES OF AGE-RELATED CHANGES IN ELECTROCARDIOGRAPHIC PARAMETERS IN CALVES OF DIFFERENT BREEDS IN THE ENVIRONMENTAL CONDITIONS OF THE REPUBLIC OF KARAKALPAKSTAN. NUUz [Internet]. 2026 Jul. 27 [cited 2026 Sep. 7];3(3.1):169-71. Available from: http://journals.nuu.uz/index.php/actanuuz/article/view/14038