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Nonfiction: Steganography: The same image viewed by white, blue, green and red lights reveals different hidden numbers.

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	18:22, 6 November 2018		480 × 120 (6 KB)	Admin (talk \| contribs)	Nonfiction: Steganography: The same image viewed by white, blue, green and red lights reveals different hidden numbers.

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