Hippel, Eric von <br/><br/>
The sources of innovation / 
Eric von Hippel. 
 - xi, 218 p. :  illus. ;  25 cm. 
<br/><br/> Includes index. 
<br/><br/>
<br/><br/><label>ISBN: </label>0195094220 
<br/><br/><label>LCCN: </label>86028620 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Teknolojik yenilikler--Ekonomik yönleri<br/>Technological innovations--Economic aspects
<br/><br/><label>LC Class. No.: </label>HC79.T4  / H56 1995