Thesis (Ph. D.)--Columbia university, 1930. / Vita. Published also as Teachers college, Columbia university, Contributions to education, no.420. Bibliography: p. 74-77.
| Identifer | oai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/650008285 |
| Date | January 1930 |
| Creators | Krieger, Laura Bertha Maria, |
| Publisher | New York city, Teachers college, Columbia university, |
| Source Sets | OCLC |
| Language | English |
| Detected Language | English |
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