Amiri Khorie, M. M. .; Moradpoor, S. .; Ranji, A. .; Karimi, B. .; Goldoust khorshidi, M. . Effect of Different Levels of Nitrogen Fertilizer and Plant Density on Yield and Yield Components of Canola. Sci. J. Crop Sci. 2014, 3, 109-114.