@book{Wald1987,
author="Peter Wald",
title="The harmony of settlement and landscape",
year="1987",
booktitle="Yemen: 3000 Years of Art and Civilisation in Arabia Felix",
editor="Werner Daum",
publisher="Pinguin-Verlag",
address="Innsbruck",
pages="389-91",
keyword0="Architecture",
type="chapter"
}