POPULATION DISTRIBUTION 



Urbanized Areas 



1.000.000 



500,000 



250.000 



50.000 



Circles proportional 

 to population 



extent of urbanized areas 



If 25.000 50.000 



■ 10,000 25.000 



• 2.500 10.000 



Rural population 



1.000-2.500 



500 



Figure 2. Population distribution in 1970 (Wood and Fernald 1974), 



