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 `year`, issue ) QQ WHERE `year`<2100 ORDER BY modified DESC LIMIT 0, 5' at line 1 Bibliographies | Miko Flohr
 

American Journal of Physical Health

Cervero, R. and M. Duncan (2003). ‘Walking, Bicycling, and Urban Landscapes: Evidence From the San Francisco Bay Area’. AJPH 93.9: 1478–1483.