"id","author_first1","author_last1","title","year","type","university","place","keyword0","keyword1","keyword2","keyword3","keyword4","keyword5" "1186","Charles F.","Swagman","Social Organization and Local Development in the Western Central Highlands of the Yemen Arab Republic","1985","dissertation","University of California, Los Angeles","Ann Arbor","Agriculture","Akhdam","Ascribed","Ismaili Islam","Status","Zaydi Islam"