Thesis--Helsinki. / Extra t.p. with thesis statement inserted. Includes bibliographical references (p. 141-145).
| Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/301115148 |
| Date | January 1973 |
| Creators | Kontiainen, Seppo. |
| Publisher | [Helsinki] : Institute of Education, University of Helsinki, |
| Source Sets | OCLC |
| Language | English |
| Detected Language | English |
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