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Open public full textRights: UNKNOWN · https://www.elsevier.com/tdm/userlicense/1.0/ · Source: journal-auto-sync:external:CROSSREF_ISSN
Erik Brouwer, Alfred Kleinknecht
Abstract
Rights: UNKNOWN · https://www.elsevier.com/tdm/userlicense/1.0/ · Source: journal-auto-sync:external:CROSSREF_ISSN
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Patents as a measure of innovative activity
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