@article{Varisco1983,
author="Daniel Martin Varisco",
title="Irrigation in an Arabian valley: A system of highland terraces in the Yemen Arab Republic",
year="1983",
journal="Expedition",
volume="25",
number="2",
pages="26-34",
keyword0="Agriculture",
keyword1="Al-Ahjur",
keyword2="Irrigation",
type="journal"
}