Mathematical games. A new kind of magic square with remarkable properties. As contained in Scientific American, volume 196, no. 1

Rulon-Miller Books buys and sells rare, fine and unusual books in many fields, with an emphasis on language, early and unusual printing, voyages and travel, archives, and appraisal services. Catalogs issued regularly. We are members of the Antiquarian Booksellers' Association of America (ABAA).

Guarantee

All books are guaranteed genuine as described, and are returnable for any reason during the two weeks after receipt. Please notify us as soon as possible if an item is being returned, so that we might make it available to another customer.

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We are happy to ship to buyers outside of the United States. Please contact us for an exact shipping quote.

All books shipped to US destinations are sent US Post Office Media Mail. We are happy to send via Priority Mail upon request for the cost of shipping. Priority delivery typically takes 3 to 5 days, but may be longer, especially during the holidays. Faster shipping is available, please contact us for a price quote. For international purchases please contact us directly.

We will combine shipping on items purchased at the same time.

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