Upadhyaya Devendra <br/><br/>
Prethvi aure manav jati ka vikas 

 - New Delhi, India  Bajrang Prakashan   1992 
 - 80p 
<br/><br/><label>Source: </label>Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sociology