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This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.
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This file contains additional information, probably added from the digital camera or scanner used to create or digitize it.
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If the file has been modified from its original state, some details may not fully reflect the modified file.
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This photographic reproduction is therefore also considered to be in the public domain in the United States.
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faithful reproductions of two-dimensional public domain works of art are public domain
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work of art. The work of art itself is in the public domain for the following reason:
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A page displaying 9×9 magic square from Cheng Dawei's Suanfa tongzong (1593)
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to indicate why this work is in the public domain in the United States.
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Click on a date/time to view the file as it appeared at that time.
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This is a faithful photographic reproduction of a two-dimensional,
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In other jurisdictions, re-use of this content may be restricted;
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The official position taken by the
Wikimedia Foundation is that "
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in its country of origin and other countries and areas where the
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Commons is a freely licensed media file repository.
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
