SZUK, T. THE EFFECT OF NATURAL AND ECONOMIC CONDITIONS ON THE LABOUR INPUT IN ROOT CROPS CULTIVATION. Acta Scientiarum Polonorum. Oeconomia, [S. l.], v. 2, n. 1, p. 115–126, 2003. Disponível em: https://aspe.sggw.edu.pl/article/view/1002. Acesso em: 29 apr. 2024.