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Some phases of the psychology of puzzle learning

Thesis (Ph. D.)--New York University, 1915. / Includes bibliographical references.

Identiferoai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/562545551
Date January 1900
CreatorsBallard, John Hudson,
Publisher[New York, Christian Alliance Pub. Co.,
Source SetsOCLC
LanguageEnglish
Detected LanguageEnglish

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