Approaches to the science of socio-economic development / 
edited by Peter Lengyel ; with contributions by Raymond Aron [and others]. 
 - Paris :  Unesco,  1971. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>  
<br/><br/><label>LCCN: </label>72175757 
<br/><br/><label>Nat. Bib. No.: </label>F*** 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economic development.<br/>Economic development -- Social aspects.--Economic development -- Social aspects.
<br/><br/><label>LC Class. No.: </label>HD82  / .L36 
<br/><br/><label>Dewey Class. No.: </label>330