Technical note. 890. Productivity measurement in R&D: Productivity measurement experiment (PROMEX) in selected research and development programs at National Bureau of Standards; [by] John T. Hall and Roger A. Dixon.
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Productivity measurement in R&D: Productivity measurement experiment (PROMEX) in selected research and development programs at National Bureau of Standards; [by] John T. Hall and Roger A. Dixon.
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Technical note. 890. Productivity measurement in R&D: Productivity measurement experiment (PROMEX) in selected research and development programs at National Bureau of Standards; [by] John T. Hall and Roger A. Dixon.