Source Data Reference for:

City = Johannesburg
Time = 1950

City	Year	Size	Size Comment	Year Comment	Author	Title	Location
Johannesburg	1925	538,000			Tertius Chandler	Four thousand years of urban growth	p506
Johannesburg	1950	1,520,000			Tertius Chandler	Four thousand years of urban growth	p530
Johannesburg	1950	1,520,000			Tertius Chandler	Four thousand years of urban growth	p507
Johannesburg	1970	2,550,000			Tertius Chandler	Four thousand years of urban growth	p510