يونس حسن مؤيد. 2010. “Effect of Row Spacing and Nitrogen Fertilization on Growth, Yield and Quality of Some Rapeseed Genotypes (Brassica Napus L.)”. College of Basic Education Research Journal 9 (4):531-50. https://doi.org/10.33899/berj.2010.Vol9.Iss4.38200.