Dawood, Shaima’a Sami. “EFFECT OF DIFFERENT TILLAGE SYSTEMS ON SOME SOIL PHYSICAL PROPERTIES AND THEIR INFLUENCE ON GROWTH AND YIELD OF WHEAT (Triticum Aestivum L). ”. Diyala Agricultural Sciences Journal , vol. 3, no. 2, Dec. 2011, pp. 357-63, https://journal.djas.uodiyala.edu.iq/index.php/dasj/article/view/3033.