СЕЙТКАМАЛОВ, Хайратдин. THE STUDIES OF AGE-RELATED CHANGES IN ELECTROCARDIOGRAPHIC PARAMETERS IN CALVES OF DIFFERENT BREEDS IN THE ENVIRONMENTAL CONDITIONS OF THE REPUBLIC OF KARAKALPAKSTAN. «ACTA NUUz», [S. l.], v. 3, n. 3.1, p. 169–171, 2026. Disponível em: http://journals.nuu.uz/index.php/actanuuz/article/view/14038. Acesso em: 7 sep. 2026.