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@SuMACzanne: On our walk @cahattan spotted this that reminds us of #zero #mathphoto16 #PCMIsummer https://t.co/0yKwLTwDiK | by tads2

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@SuMACzanne: On our walk @cahattan spotted this that reminds us of #zero #mathphoto16 #PCMIsummer https://t.co/0yKwLTwDiK

On our walk @cahattan spotted this that reminds us of #zero #mathphoto16 #PCMIsummer t.co/0yKwLTwDiK - @SuMACzanne

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Uploaded on July 10, 2016