Hameed, H., 		Shaker, A., & 		Ali, K.
2019 Mar 25.  Effect of Manganese and Zinc Foliar Application on Growth and Yield of Some Soybean Varieties Glycine max (L.) Merrill. Tikrit Journal for Agricultural Sciences مجلة تكريت للعلوم الزراعية. [Online] 16:3