Mohammed, Deia A., and Khaled M . Mugbel. 2011. “INFLUENCE OF DIFFERENT PLOWING METHODS AND IRRIGATION PERIODS ON SOME SOIL PHYSICAL PROPERTIES UNDER CROP GROWING OF CORN PLANT ”. Diyala Agricultural Sciences Journal 3 (2):276-91. https://journal.djas.uodiyala.edu.iq/index.php/dasj/article/view/3025.