Citation
Ḥarājī, al-Sayyid Muḥammad ʿUmar. Dirāsa Istikshāfiyya li-Mushārakat al-Qiyādāt al-Taʿāwuniyya al-Zirāʿiyya fī al-Anshiṭa al-Tanmawiyya wa-l-Irshād al-Zirāʿī bi-Baʿḍ Qurā Markaz Kafr al-Dawwār bi-Muḥafaẓat al-Buḥayra. Alexandria: Jāmiʿat al-Iskandariyya, 1981.