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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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Flash fired, strobe return light detected, compulsory flash firing
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The water-powered mechanism of Su Song's astronomical clock tower
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901:Science and technology of the Song dynasty
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1330:Date and time of digitizing
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1039:Մասնակից:Narek JA/Ավազարկղ
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995:Usage on es.wikipedia.org
980:Usage on ca.wikipedia.org
955:Usage on ar.wikipedia.org
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264:(or registered with the
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
