KOBUS, P. Wheat yields variability in Poland at NUTS 2 level in context of production risk. Zeszyty Naukowe SGGW w Warszawie - Problemy Rolnictwa Światowego, [S. l.], v. 6, p. 51–58, 2009. DOI: 10.22630/PRS.2009.6.6. Disponível em: https://prs.sggw.edu.pl/article/view/5834. Acesso em: 15 maj. 2024.