Trewartha, Glenn Thomas,  1896- <br/><br/>
The less developed realm :  a geography of its population / 
Glenn T. Trewartha castography by Randall B. Sale. 
 - New York :  John Wiley & Sons,  1972. 
 - 449 p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>0471887951 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Underdeveloped areas--Population.