Puri K.K. Au. <br/><br/>
Patent system in India 

 - Delhi  Bahri Brothers India        1971 
 - 221p  cm. 
<br/><br/><label>Standard No.: </label>21,273 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>Z2;2673, L1