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The effect of time upon variability

Thesis (Ph. D.)--Columbia University, 1926. / Vita. Published also as Teachers college, Columbia university, Contributions to education, no. 216. Bibliography: p. 56.

Identiferoai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/557666968
Date January 1926
CreatorsWoodyard, Ella,
PublisherNew York city, Teachers college, Columbia University,
Source SetsOCLC
LanguageEnglish
Detected LanguageEnglish

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