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| recto (The front or obverse side of a leaf; the right-hand page of an open book or manuscript); leaf; verso; front | |||
| first page | |||
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| face of a security | |||
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recto : 14 phrases, 6 sujets |
| Antennes et guides d'ondes | 2 |
| Communications | 2 |
| Électronique | 1 |
| Général | 1 |
| Informatique | 1 |
| Médical | 7 |