Effect of different levels of Nitrogen fertilizer on grain yield and its components in some grain maize hybrids. (In Persian)
Tohidi-Nejad, E. A., Kordi, F. A., Majidi, M. M., Bostan, N. and Mohamadi-Nejad, G.
Proceeding of the 10th Iranian Congress of Crop Science. 18-20 August 2008. Karaj. Iran. P. 321.