Mansfield, E.  <br/><br/>
Industrial research and technological innovation : an econometric analysis  (Book) 

 - 1st 
 - New York  Norton  1968 
 - 235 p.  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Research, Industrial--United States Technological innovations--United States
<br/><br/><label>Universal Decimal Class. No.: </label>330.115:6.001 MAN  / 6926