"id","author_first1","author_last1","title","year","publication","volume","pages","keyword0","keyword1","keyword2","type"
"1495","Horst","Kopp","Die räumliche Differenzierung der Agrarlandschaft in der Arabischen Republik Jemen (Nordjemen)","1975","Erdkunde","29","59-68","Agriculture","Tribes","YAR","journal"