Proefschrift--Vrije Universiteit, Amsterdam. / Includes bibliographical references.
| Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/646917361 |
| Date | January 1949 |
| Creators | Riessen, H. van. |
| Publisher | Kampen, J.H. Kok, |
| Source Sets | OCLC |
| Language | Dutch |
| Detected Language | Dutch |
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