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
 

Rahmstorf, L., G. Barjamovic and N. Ialongo (2021). Merchants, Measures and Money. Understanding Technologies of Early Trade in a Comparative Perspective. Weight and Value 2. Kiel: Wachholtz.