TY - JOUR A1 - Sawa, A. A1 - Bogucki, M. A1 - GÅ‚owska, M. T1 - Effect of single and multiple pregnancies on performance of primiparous and multiparous cows JO - Arch. Anim. Breed. J1 - AAB VL - 58 IS - 1 SP - 43 EP - 48 Y1 - 2015/03/04 PB - Copernicus Publications SN - 2363-9822 UR - https://aab.copernicus.org/articles/58/43/2015/ L1 - https://aab.copernicus.org/articles/58/43/2015/aab-58-43-2015.pdf DO - 10.5194/aab-58-43-2015 ER -