Preston, P. W. <br/><br/>
Development theory :  an instruction / 
P. W. Preston 
 - Massachusetts :  Blackwell Publishing,  1996       
 - xv, 368 p. 
<br/><br/><label>ISBN: </label>0631195548 
<br/><br/><label>LC Class. No.: </label>HD 75 P939d 1996