Hall, Bronwyn H <br/><br/>
Appropriability mechanisms, innovation and productivity :  Evidence from U.K / 
Bronwyn H. Hall and Vania Sena 
 - Cambridge  NBER  2014 
 - 48p 
 - NBER Working Paper ;  20514 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>NBERWP 20514<br/>E12990.pdf