Riddell, J Barry <br/><br/>
Spatial dynamics of modernisation in sierra leone  structure, diffusion and response 

 - Evanston  Northwestern university press  1970 
 - xii, 142p.; 26cm. 
<br/><br/><label>ISBN: </label>810103095 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Administrative system<br/>Migration to freetown<br/>Public administration - spatial dynamic modernisation<br/>Transportation network