Ruža A, Kreita D, Krotovs M, Maļecka S, Stramkale V. Nitrogen Fertilizer Use Efficiency in Winter Wheat Trials. ETR [Internet]. 2006 Jun. 26 [cited 2024 Dec. 4];1:232-7. Available from: https://journals23.rta.lv/index.php/ETR/article/view/2011