Balchin, Paul N. <br/><br/>
Regional and urban economics / 
Paul N. Balchin, Gregory H. Bull. 
 - London :  Harper & Row,  1987. 
 - 249 p. :  ill. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/>p. 230-241 
<br/><br/><label>ISBN: </label>0063183684 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Regional economics.