@book{Nyrop1977, author="Richard F. Nyrop", title="Area Handbook for the Yemens", year="1977", publisher="United States Government Printing Office", address="Washington, D.C.", keyword0="Economy", keyword1="Education", keyword2="Health", keyword3="History", keyword4="Islam", keyword5="PDRY", keyword6="Religion", keyword7="YAR", type="book" }