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| zone À (A text box where someone enters the e-mail addresses of the primary recipients of an e-mail message) | |||
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To box : 21 a las frases, 7 temas |
| Ciencia de los materiales | 3 |
| Comunicaciones | 3 |
| Embalaje | 1 |
| Finanzas | 1 |
| General | 4 |
| Metalurgia | 3 |
| Transporte | 6 |