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R&D and productivity : empirical evidence at the firm level
Wieser, Robert - 2001
Persistent link: https://www.econbiz.de/10011492065
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R&D and productivity : evidence for European and U.S. firms in the 1990s
Wieser, Robert - 2001
Persistent link: https://www.econbiz.de/10011492248
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R&D and productivity : evidence for European and US firms in the 1990s
Wieser, Robert - 2001
Persistent link: https://www.econbiz.de/10001618474
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R&D and productivity : empirical evidence at the firm level
Wieser, Robert - 2001
Persistent link: https://www.econbiz.de/10001618480