13 resultados para puzzle difficulty
em University of Michigan
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Mode of access: Internet.
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Includes bibliographical references.
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Mode of access: Internet.
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Mode of access: Internet.
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Title page includes illustration of a pavement under a columned archway; all other ill. are squares with individual black & white geometric designs, except for leaf [9] which contains squares without designs but with guidelines drawn in them.
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Mode of access: Internet.
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Reproduced from type-written copy.
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Grades 5-8.
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"January 1985."
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Mode of access: Internet.
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Page xiii incorrectly numbered xii.
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Mode of access: Internet.
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Mode of access: Internet.