You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'ORDER BY issue DESC, `year` DESC ) QQ WHERE `year`<2100 ORDER BY modified DES...' at line 1 Bibliographies | Miko Flohr
 

Talbert, R. and R. Unger (2008). Cartography in Antiquity and the Middle Ages. Fresh Perspectives, New Methods. Technology and Change in History 10. Leiden: Brill.