-Mahmod, A. A., 		Al-Saidi, A. J. H ., AND 		Saltern, K. A..
" Effect of Interaction Betw·een Phosphorus and Zink in Some Morphological Features of Two Varieties of Wheat Grown in Gypsum Soil" <em>Ibn AL- Haitham Journal For Pure and Applied Science</em> [Online], Volume 21 Number 3 (23 September 2017)