Thesis (doctoral)--Rijksuniversiteit te Groningen.
| Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/297366006 |
| Date | January 1934 |
| Creators | Wal, Libbe Gerrit van der. |
| Publisher | Groningen, M. de Waal, |
| Source Sets | OCLC |
| Language | Dutch |
| Detected Language | Dutch |
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