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| artificial plastic; artificial plastics | |||
| artificial resin; synthetic resin | |||
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| artificial resins semi-finished products; synthetic resins semi-finished products | |||
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| synthetic resins | |||
| phenol-cresol-formaldehyde synthetic resins | |||
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resine synthetique : 21 a las frases, 9 temas |
| Agricultura | 1 |
| Antenas y guías de onda. | 1 |
| Aparatos médicos | 2 |
| Construcción | 2 |
| Industria | 9 |
| Metalurgia | 2 |
| Patentes | 2 |
| Petróleo | 1 |
| Tecnología | 1 |