A patent-based cartography of technology

E. C. Engelsman and A. F. J. van Raan

Research Policy, 1994, vol. 23, issue 1, pages 1-26

Date: 1994
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Research Policy is edited by M. Bell, B. Martin, W.E. Steinmueller, A. Arora, M. Callon, M. Kenney, S. Kuhlmann, Keun Lee and F. Murray

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