Kareem, Aryan, Hasan Serin, & Khalid Khalil Ahmed. " The Role of Fragmentation of Plant Densities in The Growth and Yield of Three Varieties of Soybean Glycine max L." Tikrit Journal for Agricultural Sciences مجلة تكريت للعلوم الزراعية [Online], 19.1 (2019): 142-153. Web. 14 Aug. 2021