Desty Sidik 2024. NOURISHING PRODUCTIVITY: EXAMINING THE IMPACT OF CONCENTRATE FEED AND MINERAL BLOCKS ON DENSITY LEVELS AND MILK FAT CONTENT IN DAIRY CATTLE. American Journal of Applied Science and Technology. 4, 01 (Jan. 2024), 42–46. DOI:https://doi.org/10.37547/ajast/Volume04Issue01-08.