Qat
is a Drug and most Yemeni's are addicted to it (by Adel
Ben-Harhara)
From Aden to India and Cairo: Jewish
world trade in the 11/12th centuries, by Wener Daum
Islam in Yemen, by Wilferd Madelung
Ancient Shabwa, the Capital of
Hadramawt, by Jean-Farncois Breton
Yemeni Poetry from the Pre-Islamic
age, Mohamed Abduh Ghanim
Astronomy in Medieval Yemen, by David
A. King
Agriculture in Yemen (from Mocca to
Qat, by Horst Kopp
Yemen and Ethiopia- Ancient cultural
links, by Walter Raunig