@book{Morghem1983, author="Mohamed M. Morghem and Mohamed I. Rufat", title="Cultivation and chewing of khat in the Yemen Arab Republic", year="1983", booktitle="The Health and Socio-Economic Effects of Khat Use", editor="B. Shahandeh", publisher="International Council on Alcohol and Addictions", address="Lausanne", pages="215-18", keyword0="Marketing", keyword1="Qat", type="chapter" }