| Identifer | oai:union.ndltd.org:CCSD/oai:tel.archives-ouvertes.fr:tel-00010371 |
| Date | 05 July 1972 |
| Creators | Lefèvre, Patrick |
| Source Sets | CCSD theses-EN-ligne, France |
| Language | French |
| Detected Language | French |
| Type | PhD thesis |
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