Source Data Reference for:

City = Clermont Ferrand
Time = 1800

City	Year	Size	Size Comment	Year Comment	Author	Title	Location
Clermont	1800	24,000			Tertius Chandler	Four thousand years of urban growth	p488
Clermont	1800	24,000			Tertius Chandler	Four thousand years of urban growth	p25
Clermont Ferrand	1800	30,000			Jan De Vries	European urbanization 1500-1800	p274
Clermont Ferrand	1800	24,000			Paul Bairoch	La population des villes europeennes de 800 a 1850
Clermont Ferrand	1815	31,500			Valentin Parisot	Dictionnaire geographique universelle