JARKA, Sławomir. ANALYSIS OF FACTORS AFFECTED ON EFFICIENCY MILK FARMS. Acta Scientiarum Polonorum. Oeconomia, [S. l.], v. 6, n. 4, p. 13–18, 2007. Disponível em: https://aspe.sggw.edu.pl/article/view/860. Acesso em: 7 apr. 2025.