Source Data Reference for:

City = Verona
Time = 1000

City	Year	Size	Size Comment	Year Comment	Author	Title	Location
Verona	900	25,000			Paul Bairoch	La population des villes europeennes de 800 a 1850
Verona	1000	20,000			Paul Bairoch	La population des villes europeennes de 800 a 1850
Verona	1000	20,000			Tertius Chandler	Four thousand years of urban growth	p538
Verona	1000	20,000			Tertius Chandler	Four thousand years of urban growth	p15