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

 - Lajpat  Rai Market Bhari brothers punlishers and book sellers India  1971 
 - 221p  cm. 
<br/><br/><label>Standard No.: </label>7,423 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>Z2:2673, L1