Hippel,Eric Von <br/><br/>
The sources of innovation 

 - New York  Oxford   1988 
 - xi,218p. 
<br/><br/><label>ISBN: </label>0195040856 
<br/><br/><label>Subjects--Index Terms: </label>technological innovations  sources of  innovation 
<br/><br/><label>Dewey Class. No.: </label>330.341.1  / HIP