International Symposium on Khat (Catha edulis) (1984 Addis Ababa, Ethiopia)
Muʼassasat al-ʻAfīf al-Thaqāfīyah (Ṣanʻāʼ, Yemen)
Unknown Author
ʻAbd al-Malik ʻIlwān Maraqmī
Charles Karimi Maitai
International Conference on Khat (1983 Antananarivo, Madagascar)
ʻAbbās Fāḍil Saʻdī
Raʻdī,Muḥammad Aḥmad.
al-Tijānī Māḥī
International Conference on Khat (1983 Antanarivo, Madagascar)
ʻAbd Allāh Saʻīd Bā Ḥājj
Bertil Nelhans
Markaz al-Dirāsāt wa-al-Buḥūth al-Yamanī
Raʻdī,Muḥammad Aḥmad.
Muʼtamar al-Dawlī lil-Qāt (1983 Antananarivo, Madagascar)