Source Data Reference for:

City = Caltanissetta
Time = 1800

City Year Size Size Comment Year Comment Author Title Location
Caltanissetta1800 16,000Jan De VriesEuropean urbanization 1500-1800p276
Caltanissetta1800 16,000Paul BairochLa population des villes europeennes de 800 a 1850
Caltanissetta1820 5,500Valentin ParisotDictionnaire geographique universelle