search query: @author Zimmermann, K. F. / total: 3
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| Author: | Zimmermann, K. F. Schwalbach, J. |
| Title: | Determinanten der Patentaktivität. |
| Journal: | IFO-Studien
1991 : VOL. 37:3-4, p. 201-227 |
| Index terms: | PATENTS |
| Language: | ger |
| Abstract: |
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