Source Data Reference for:

City = Mantua
Time = 1850

City	Year	Size	Size Comment	Year Comment	Author	Title	Location
Mantua	1850	30,000			Paul Bairoch	La population des villes europeennes de 800 a 1850
Mantua	1850	28,000			Tertius Chandler	Four thousand years of urban growth	p26
Mantua	1861	28,200		1861/62	n/a	Gothaischer Hofkalender