Ahmed، A. A. M. A.، و Tell، A. A. (1997). Comparative study of two forage legume species for their performance as influenced by different levels of organic manure at AL-Muwaqar (رسالة ماجستير غير منشورة). الجامعة الاردنية، عمان. مسترجع من http://search.mandumah.com/Record/554949
Ahmed، Abd Allah M. A.، و Abd Almajid Tell. "Comparative Study of Two Forage Legume Species for Their Performance As Influenced By Different Levels of Organic Manure At AL-Muwaqar" رسالة ماجستير. الجامعة الاردنية، عمان، 1997. مسترجع من http://search.mandumah.com/Record/554949