Thesis--University of Helsinki.
| Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/298891207 |
| Date | January 1956 |
| Creators | Vahervuori, Teuvo K. T. |
| Publisher | Helsinki, |
| Source Sets | OCLC |
| Language | English |
| Detected Language | English |
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