"id","author_first1","author_last1","title","year","publication","volume","issue","pages","author_first2","author_last2","keyword0","type" "1452","F.N.","Hepper","Were there forests in the Yemen?","1979","Proceedings of the Seminar for Arabian Studies","9","Proceedings of the Twelft","65-71","J.R.I.","Wood","Vegetation","journal"