Jakab, Péter, and Piroska Jakabné Nagy. “Environmentally Friendly Nutrient Supply of Spring Barley”. Review on Agriculture and Rural Development 2, no. 1 (January 1, 2013): 274–277. Accessed May 5, 2024. https://ojs.bibl.u-szeged.hu/index.php/rard/article/view/13321.