Bujanowicz-Haraś, Barbara, and Jan Matras. 2004. “ECONOMIC EFFECTIVENESS OF MINERAL MIXTURES BALANCING MINERAL NUTRITION OF COWS IN CHOSEN BARNS OF CENTRAL-EAST POLAND”. Acta Scientiarum Polonorum. Oeconomia 3 (2), 47-53. https://js.wne.sggw.pl/index.php/aspe/article/view/3630.