@book{Zain1981,
author="Mohamed Gaffar Zain",
title="The brain drain in the context of social change to Democratic Yemen and problems in high level manpower training at Aden University",
year="1981",
booktitle="The Arab Brain Drain (Proceedings of a seminar organised by the Natural Resources, Science and Technology Division of the United Nations Economic Commission for West Asia. Beirut 4-8 February 1980)",
editor="A.B. Zahlan",
publisher="Ithaca Press",
address="London",
pages="43-58",
keyword0="Migration",
keyword1="PDRY",
type="chapter"
}