SERIN, YUNUS, and H. IBRAHIM ERKOVAN. “Nitrogen Use Efficiency, Symbiotic N2 Fixation and Transfer in Red Clover-Grass Mixtures”. Asian Journal of Chemistry 20, no. 3 (March 30, 2010): 2205–2210. Accessed July 20, 2024. https://asianpubs.org/index.php/ajchem/article/view/19232.