Jakab, Péter, Piroska Nagy, and István Kristó. “Environmentally Friendly Nutrient Supply of Maize”. Review on Agriculture and Rural Development 3, no. 1 (January 1, 2014): 320–323. Accessed May 15, 2024. https://www.iskolakultura.hu/index.php/rard/article/view/13442.