"id","author_first1","author_last1","title","year","publication","place","keyword0","keyword1","keyword2","keyword3","keyword4","keyword5","keyword6","keyword7","type"
"1927","Hans","Steffen","Population Geography of the Yemen Arab Republic: The Major Findings of the Population and Housing Census of February 1975 and of Supplementary Demographic and Cartographic Surveys","1979","Beihefte zum Tübinger Atlas der Vorderen Orients. Reihe B Nr.39","Wiesbden","Census","Education","Geography","Government","History","Literacy","Manpower","Physical","report"