Patents, invention, and economic change data and selected essays
| Main Author: | |
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| Format: | Book |
| Language: | English |
| Published: |
Cambridge, Mass.
Harvard University Press
1972.
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| Subjects: |
| Main Author: | |
|---|---|
| Format: | Book |
| Language: | English |
| Published: |
Cambridge, Mass.
Harvard University Press
1972.
|
| Subjects: |