SROKA, W.; PÖLLING, B. The Potential and Significance of Urban Agriculture on the Basis of the Ruhr Metropolis and the Upper Silesian Metropolis. Zeszyty Naukowe SGGW w Warszawie - Problemy Rolnictwa Światowego, [S. l.], v. 15, n. 4, p. 180–193, 2015. DOI: 10.22630/PRS.2015.15.4.66. Disponível em: https://prs.sggw.edu.pl/article/view/5323. Acesso em: 22 grudz. 2024.