Edulamudi, Prabhavati, Vishnuvardhan Zakkula, Umamaheswara Rao Vanga, and Veera Mallaiah Konada. 2019. “Copper Effect on Photosynthetic Performance, Symbiotic Efficiency and Biosorption of Rhizobia Associated With Horse Gram [Macrotyloma Uniflorum (Lam.) Verdc.]”. Cuban Journal of Agricultural Science 53 (4). https://www.cjascience.com/index.php/CJAS/article/view/930.