MAKE A MEME View Large Image Sundial 007.jpg Commemorative sundial pamphlet first page National Institute of Standards and Technology National Institute of Standards and Technology PD-USGov-NIST PD-USGov Sundial on the NBS campus Washington D C
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Keywords: Sundial 007.jpg Commemorative sundial pamphlet first page National Institute of Standards and Technology National Institute of Standards and Technology PD-USGov-NIST PD-USGov Sundial on the NBS campus Washington D C
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