Proefschrift--Leiden. / Part of illustrative material folded. Summaries in Dutch and French. Includes bibliographical references.
| Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/301105171 |
| Date | January 1963 |
| Creators | Ypma, Petrus Johannes Maria, |
| Publisher | Alphen aan den Rijn, Vis-Druk, |
| Source Sets | OCLC |
| Language | English |
| Detected Language | English |
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