Source Data Reference for:

City = Tehran
Time = 1000

City	Year	Size	Size Comment	Year Comment	Author	Title	Location
Rayy	900	100,000			George Modelski	World Cities -3000 to 2000	p55
Rayy	900	100,000			Tertius Chandler	Four thousand years of urban growth	p468
Rayy	900	100,000			Tertius Chandler	Four thousand years of urban growth	p537
Rayy	900	100,000			Tertius Chandler	Four thousand years of urban growth	p532
Rayy	925	100,000			Tertius Chandler	Four thousand years of urban growth	p533
Rayy	1000	100,000			Tertius Chandler	Four thousand years of urban growth	p469
Rayy	1000	100,000			George Modelski	World Cities -3000 to 2000	p55
Rayy	1000	18,500	"btw 15,000 & 22,000"		Colin McEvedy	The New Penguin Atlas of Medieval History ISBN 0-14-051249-7	p57
Rayy	1000	100,000			Tertius Chandler	Four thousand years of urban growth	p71
Rayy	1000	100,000			Tertius Chandler	Four thousand years of urban growth	p522