Productivity and R&D at the Firm Level
    Published Date 
  
  
    Copyright 1984
  
  
    ISBN 0226308847
  
 
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      Copy CitationZvi Griliches and Jacques Mairesse, R&D, Patents, and Productivity (University of Chicago Press, 1984), chap. 17, https://www.nber.org/books-and-chapters/rd-patents-and-productivity/productivity-and-rd-firm-level.
 
     
    