@book{Schopen1978,
author="Armin Schopen",
title="Das Qat. Geschichte und Gebrauch des Genussmittels Catha Edulis Forsk. in der Arabischen Republik Jemen",
year="1978",
publisher="Franz Steiner Verlag",
address="Wiesbaden",
keyword0="Pharmacology",
keyword1="Qat",
type="book"
}