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基本説明
New in softcover. Hardcover was published in 2003. Explores the concentration of inovation across metropolitan areas in the United
States during the 1990s.
Full Description
Jaffe (1989) made a significant contribution to estimating the knowledge production function when he established a relationship between patent activity and R&D activity at the state level. Feldman's work also differentiated by firm size and showed that knowledge spillovers from universities play a key role as sources of knowledge for small firms.



