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_tARC _zALEX22943 _fCorrespondance |
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| 100 | _a20241101d1941 m||y0frey50 ba | ||
| 200 |
_aPaul Langevin. _eCorrespondance |
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| 214 |
_aTroyes _d17/01/1941 |
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| 300 | _aEn-tête: Collège de France | ||
| 307 | _aLettre | ||
| 327 | _aCopie | ||
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_aLangevin _bPaul _4070 |
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_aKAPITZA _bP. L. _4660 |
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