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Mansel Wells

The Abacus: Index - 0 views

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    a site containing a Java-abacus, the history of the abacus, and instructions for use
Mansel Wells

Maps ETC Homepage - 0 views

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    "over 5,000 maps representing many different time periods. A friendly license allows teachers and students to use up to 25 maps in non-commercial school projects without further permission. All maps are available as GIF or JPEG files"
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