International patent classification.
| Corporate Author: | |
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| Format: | Book |
| Language: | English |
| Published: |
[Geneva, Switzerland] : München :
World Intellectual Property Organization ; C. Heymanns Verlag,
1989.
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| Edition: | 5th ed. |
| Subjects: |
| Physical Description: | 9 volumes ; 30 cm. |
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