Singh, Nagendra Kr. <br/><br/>
Encyclopaedia of the Indian biography: O- R 

 - 
 - New Delhi  A.P.H.  2000 
 - xxx,699p.   
<br/><br/>  8 vol. 
<br/><br/><label>ISBN: </label>81-7648-088-6 
<br/><br/><label>ISSN: </label>
<br/><br/><label>Subjects--Index Terms: </label>Encyclopaedias - Biography  Indian Biography - Encyclopaedias 
<br/><br/><label>Dewey Class. No.: </label>03(092)(540)