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          <dc:title xml:lang="en">Technology in-Licensing and its Diversification Effects at Firm Level : A Microanalysis Using Patent Subclasses</dc:title>
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          <jpcoar:subject subjectScheme="Other">特許定量分析</jpcoar:subject>
          <jpcoar:subject subjectScheme="Other">米国サブクラス分類</jpcoar:subject>
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