Czerniawska-Piątkowska E. , Szewczuk M. , Chociłowicz E. , Konstancik N. 2012. COMPARISON OF LIMOUSIN AND SIMMENTAL PRIMIPAROUS COWS BASED ON THE VARIABILITY OF AGE AT FIRST CALVING, BODY WEIGHT AND THE ANALYSIS OF THEIR GROWTH AND DEVELOPMENT, EJPAU 15(2/volume15), #07.