Source Data Reference for:

City = Brody
Time = 1850

City	Year	Size	Size Comment	Year Comment	Author	Title	Location
Brody	1850	23,000			Tertius Chandler	Four thousand years of urban growth	p26
Brody	1850	22,000			Paul Bairoch	La population des villes europeennes de 800 a 1850
Brody	1869	18,700			n/a	http://www.wikipedia.org/	eng2012