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_tARC _zALEX22988 _fCorrespondance |
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| 100 | _a20241101d1929 m||y0frey50 ba | ||
| 200 |
_aPaul Langevin. _eCorrespondance |
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| 214 |
_aBruxelles _d27/03/1929 |
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| 300 | _aEn-tête: Commission administrative de l'Institut international de Physique Solvay | ||
| 307 | _aLettre | ||
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_aLefébure _bCharles _4070 |
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| 701 |
_aLangevin _4660 |
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