For citations:
Duskaev G.K., Kvan O.V., Sheida E.V., Rakhmatullin Sh.G., Levakhin G.I. The effect of substances isolated from an aqueous extract of oak bark on the concentration of chemical elements in the body of broiler chickens. Agrarian science. 2023;1(8):72-79. (In Russ.) https://doi.org/10.32634/0869-8155-2023-373-8-72-79
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