Ako si chrániť nápady? (42) Obrusy - priemyselný vzor z výrobného družstva
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| Format: | Article |
| Language: | Slovak |
| PhysicalDescription: | Obr. |
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| Main Author: | |
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| Format: | Article |
| Language: | Slovak |
| PhysicalDescription: | Obr. |
| Subjects: |
