Mhmood, Jawad Taha. 2013. “RESPONAS OF GROWTH CHARACTERSTICS AND YIELD OF POTATO FERTILIZED WITH ORGANIC MATTER TO THE SPRAY OF FE AND ZN ”. Diyala Agricultural Sciences Journal 5 (2):637-47. https://journal.djas.uodiyala.edu.iq/index.php/dasj/article/view/2847.