For citations:

Polkovnichenko P.A., Polkovnichenko P.A., Larina Yu.V. Metabolism of microelements in cattle of the holsteen breed in biogeochemical conditions of the Astrakhan region. International Journal of Veterinary Medicine. 2022;(4):274-280. (In Russ.) https://doi.org/10.52419/issn2072-2419.2022.4.274