Source Data Reference for:

City = Aachen
Time = 1800

City Year Size Size Comment Year Comment Author Title Location
Aachen1800 23,000Tertius ChandlerFour thousand years of urban growthp488
Aachen1800 24,000Jan De VriesEuropean urbanization 1500-1800p272
Aachen1800 24,000Paul BairochLa population des villes europeennes de 800 a 1850
Aachen1800 23,000Tertius ChandlerFour thousand years of urban growthp25