Source Data Reference for:

City = Lviv
Time = 1800

City	Year	Size	Size Comment	Year Comment	Author	Title	Location
Lemberg	1800	42,000			Tertius Chandler	Four thousand years of urban growth	p486
Lemberg	1800	42,000			Tertius Chandler	Four thousand years of urban growth	p23
Lviv	1800	41,900			Jan Lahmeyer	http://www.populstat.info/	n/a
Lvov	1800	42,000			Paul Bairoch	La population des villes europeennes de 800 a 1850