Thesis--University of Helsinki. / Includes bibliographical references.
Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/558108938 |
Date | January 1970 |
Creators | Pentikàˆinen, Pertti. |
Publisher | Helsinki : [s.n.], |
Source Sets | OCLC |
Language | English |
Detected Language | English |
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