"id","author_first1","author_last1","title","year","btitle","publisher","place","pages","author_first2","author_last2","keyword0","keyword1","type" "1765","John S.","Birks","The Yemen Arab Republic (YAR)","1980","Arab Manpower: The Crisis of Development","St. Martin's Press","New York","244-55","Clive A.","Sinclair","Manpower","Migration","chapter"