Györgyi, Gyuláné. “Examination of French Bean on Organic and Conventional Farming of Research Centre of Nyíregyháza”. Acta Agraria Debreceniensis, no. 34 (September 2, 2009): 87–98. Accessed April 15, 2021. https://ojs.lib.unideb.hu/actaagrar/article/view/2825.