Productivity growth and R&D at the business level :
results from the PIMS data base /
Kim B. Clark, Zvi Griliches.
APA Citation
Clark, K. B., Griliches, Z. (1982). Productivity growth and R&D at the business level: results from the PIMS data base. Cambridge, MA: National Bureau of Economic Research.
MLA Citation
Clark, Kim B, and Zvi Griliches. Productivity Growth And R&D At the Business Level: Results From the PIMS Data Base. Cambridge, MA: National Bureau of Economic Research, 1982.
Warning: These citations may not always be complete (especially for serials).