Source Data Reference for:

City = Liberec
Time = 1800

City	Year	Size	Size Comment	Year Comment	Author	Title	Location
Liberec	1800	10,000			Paul Bairoch	La population des villes europeennes de 800 a 1850
Liberec	1820	13,500		ca 1820	Valentin Parisot	Dictionnaire geographique universelle