Role of patent information in research and development 

 - Geneva  World intellectual property organization Geneva      1975 
 - 372p  cm. 
<br/><br/><label>Standard No.: </label>19,062 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>Z,2673p58,N74, L5