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Trends in marking systems

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Identiferoai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/553547
Date January 1940
CreatorsWilson, Glenn, 1907-
PublisherThe University of Arizona.
Source SetsUniversity of Arizona
Languageen_US
Detected LanguageDanish
Typetext, Thesis-Reproduction (electronic)
RightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.

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