Al-Shaheen, Mustafa R., Mokhald Hadi Asmail, and Mohammed R. Al-Shaheen. 2019. “Effect of Iron Nanoparticles and Dry Yeast Extract on the Yield and the Productivity of Corn (Zea Maize L.)”. Iraqi Journal of Science, April, 46-51. https://ijs.uobaghdad.edu.iq/index.php/eijs/article/view/646.