Kropyvka, Y.G. and Bomko, V.S. 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. 3 (Sep. 2021), 118–126. DOI:https://doi.org/10.31210/visnyk2021.03.14.