OSTROMĘCKI, Artur; MANTAJ, Andrzej; ZAJĄC, Dariusz. THE IMPORTANCE OF NON-AGRICULTURAL ECONOMIC ACTIVITY OF FARMERS IN THE MODERNIZATION PROCESS OF FARMS. Acta Scientiarum Polonorum. Oeconomia, [S. l.], v. 14, n. 4, p. 83–92, 2015. Disponível em: https://aspe.sggw.edu.pl/article/view/418. Acesso em: 4 apr. 2025.