Swinford, Paul, Wondrous World of Numberplay and Wordplay, The. (ID-20700)

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Strivings, Mark, Sum Influence. (ID-20580)

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Smith, Willard S., Name-a-Date Calendar. (ID-19940)

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Solberg, James J., Advanced Magic Square Methods and Tricks. (ID-19987)

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Solberg, James J., Easy Magic Square Methods and Tricks. (ID-19988)

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