Source Data Reference for:

City = Leiden
Time = 1500

City Year Size Size Comment Year Comment Author Title Location
Leiden1500 14,000Jan De VriesEuropean urbanization 1500-1800p271
Leiden1500 14,000Jan Lahmeyerhttp://www.populstat.info/n/a
Leiden1500 14,000Paul BairochLa population des villes europeennes de 800 a 1850