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Showing results 1 - 2 of about 2 for copyright

  1. Researches concerning the periodical meteors of August and November

    ...(CC0 1.0) This content is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this...

    https://library.si.edu/digital-library/book/researchesconcer00walk

  2. Determination of the longitude of several stations near the northern boundary of Ohio, from transits

    ...(CC0 1.0) This content is in the public domain (free of copyright restrictions). You can copy, modify, and distribute this...

    https://library.si.edu/digital-library/book/determinationofl00walk

Showing results 1 - 2 of about 2 for copyright
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