Source Data Reference for:

City = Cadiz
Time = 1750

City	Year	Size	Size Comment	Year Comment	Author	Title	Location
Cadiz	1750	60,000			Tertius Chandler	Four thousand years of urban growth	p517
Cadiz	1750	60,000			Tertius Chandler	Four thousand years of urban growth	p22
Cadiz	1750	60,000			Paul Bairoch	La population des villes europeennes de 800 a 1850
Cadiz	1750	60,000			Jan De Vries	European urbanization 1500-1800	p277