AL-Neama, Amer K., and Riyadh A. AL-Jubory. 2009. “EFFECT OF DIFFERENT AIR PRESSURE IN REAR TIRE ON NEW HOLLAND TT 75 FWA TRACTORS PERFORMANCE ”. Diyala Agricultural Sciences Journal 1 (2):51-57. https://journal.djas.uodiyala.edu.iq/index.php/dasj/article/view/3166.