Proefschrift--Groningen. / "Stellingen" [2] p. inserted. Summary in Dutch. Includes bibliographical references.
| Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/297350753 |
| Date | January 1971 |
| Creators | Roeders, J. D. A. |
| Publisher | Groningen, Druk Veenstra-Visser, |
| Source Sets | OCLC |
| Language | English |
| Detected Language | English |
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