"id","author_first1","author_last1","title","year","publication","volume","pages","keyword0","keyword1","keyword2","keyword3","keyword4","keyword5","keyword6","type" "1437","Fred","Halliday","Yemen's unfinished revolution: Socialism in the south","1979","MERIP Reports","81 [9(8)]","3-20","Al-Ghashmi","Amad","Assassination","PDRY","PDRY-Ethiopia","Politics","Yemeni Socialist Party","journal"