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Studies of mental fatigue in relation to the daily school program

Thesis (Ph. D.)--Columbia University, 1914.

Identiferoai:union.ndltd.org:OCLC/oai:xtcat.oclc.org:OCLCNo/557745614
Date January 1914
CreatorsHeck, William Harry,
PublisherLynchburg, Va., J.P. Bell Co., printers,
Source SetsOCLC
LanguageEnglish
Detected LanguageEnglish

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