Synergy in the knowledge base of U.S. innovation systems at national, state, and regional levels: The contributions of high‐tech manufacturing and knowledge‐intensive services
['Loet Leydesdorff', 'Caroline S. Wagner', 'Igone Porto‐Gomez', 'Jordan A. Comins', 'Fred Phillips']
/
Journal of the Association for Information Science and Technology
/ Vol. 70
/ No. 10
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