Source Data Reference for:

City = Katsina
Time = 1700

City	Year	Size	Size Comment	Year Comment	Author	Title	Location
Katsina	1650	60,000			Tertius Chandler	Four thousand years of urban growth	p482
Katsina	1700	60,000			Tertius Chandler	Four thousand years of urban growth	p516
Katsina	1700	60,000			Tertius Chandler	Four thousand years of urban growth	p285
Katsina	1700	60,000			Tertius Chandler	Four thousand years of urban growth	p58