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Comparative effectiveness of some visual aids in seventh grade instruction,

Thesis (PH. D.)--Columbia University, 1921. / Thesis note in different form mounted over thesis note on t.-p. and 1 leaf containing biography inserted at end. Also available in digital form on the Internet Archive Web site.

Identiferoai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/3586316
Date January 1900
CreatorsWeber, Joseph J.,
PublisherChicago, Ill., Educational Screen,
Source SetsOCLC
LanguageEnglish
Detected LanguageEnglish

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