Hippel, Eric von. <br/><br/>
The Sources of innovation / 
by Eric von Hippel. 
 - New York :  Oxford,  1988. 
 - 218 p. : ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/> Research in economics highlighting the customers' needs. 
<br/><br/><label>ISBN: </label>0195094220 
<br/><br/><label>LCCN: </label>8628620 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Technological innovations--Economic aspects.