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    7stones Products

  • 7physics teaching and learning tool

    Pricing: $15 for individual use; $90 for unlimited institutional use.
    Payment either through PayPal (www.paypal.com) to the account gdixon@7stones.com,
    or send check to:
    Geoffrey Dixon
    103 Dover Rd
    Durham, NH 03824

    Don't forget your mailing address!
    Contact me at gdixon@7stones.com for more details.

  • 7stones Graphing Calculator
    May 2003

  • 7octo: Octonion Calculator

 

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