86 resultados para classroom trouble
em University of Michigan
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Item 455-G-9
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Mode of access: Internet.
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Mode of access: Internet.
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Issued also as National Society for the Study of Education. Yearbook. 1920. v. 19, pt. 2.
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National Highway Traffic Safety Administration, Washington, D.C.
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Bibliography: v. 1, p. [169]; v. 2, p. [189]-190.
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Mode of access: Internet.
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Project No. 711151.01.
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Bibliography: p. 100-102.
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"Contract No. AT(40-1)-Gen-33."
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Mode of access: Internet.