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` DESC, author) QQ WHERE `year`<2100 ORDER BY modified DESC LIM...' at line 1 Bibliographies | Miko Flohr
 

Combined Bibliography: Demography and Urbanization

Demography
Urbanization
De Ligt, L. (2012). Peasants, Citizens and Soldiers: Studies in the Demographic History of Roman Italy 225 BC - AD 100. Cambridge: Cambridge University Press.