al-Summary, Hassan Thamer. 2011. “SPACE OPTIMAL FARMS GREENHOUSES FOR CROP OPTION IN THE PROVINCE OF SALAH AL-DIN OF THE PRODUCTIVE SEASON OF 2010”. Diyala Agricultural Sciences Journal 3 (2):223-30. https://journal.djas.uodiyala.edu.iq/index.php/dasj/article/view/2996.