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
 

Erdkamp, P.P.M. and K. Verboven (2015). Structure and Performance in the Roman Economy. Models, Methods and Case Studies. Collection Latomus 350. Brussels: Éditions Latomus.