Effect of Soil Textural Classes on the Biological Nitrogen Fixation by Bradyrhizobium Measured by 15N Dilution Analysis. Baghdad Sci.J [Internet]. 2016 Dec. 4 [cited 2024 Apr. 28];13(4):0734. Available from: https://bsj.uobaghdad.edu.iq/index.php/BSJ/article/view/2313