BŁAŻEJCZYK-MAJKA, Lucyna; KALA, Radosław. Labour Forceas a Factor Improving Efficiency of Agricultural Economic Activity in the EU. Studia Historiae Oeconomicae, [S. l.], v. 30, p. 71–91, 2012. DOI: 10.14746/sho.2012.30.1.004. Disponível em: https://pressto.amu.edu.pl/index.php/sho/article/view/28946. Acesso em: 10 dec. 2025.