Kropyvka, Yu. G., and V. S. Bomko. 2021. “EFFECTIVENESS OF USING MIXED-LIGAND COMPLEXES OF ZINC, MANGANESE AND COBALT IN FEEDING HIGHLY PRODUCTIVE COWS IN THE EARLY DRY PERIOD”. Scientific Progress & Innovations, no. 3 (September):118-26. https://doi.org/10.31210/visnyk2021.03.14.