ZAJDEL, M. NON-AGRICULTURAL BUSINESS ACTIVITY OF PRIVATE FARMS. Acta Scientiarum Polonorum. Oeconomia, [S. l.], v. 5, n. 2, p. 77–86, 2006. Disponível em: https://aspe.sggw.edu.pl/article/view/915. Acesso em: 7 may. 2024.