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), pp. 118–126. doi: 10.31210/visnyk2021.03.14.