The books in this section are usually hardcover and in decent shape, though we'll sometimes offer hard-to-find books in lesser condition at a reduced price. Though we often put images of the book with their original dust jackets, the copies here won't always (or even often) have them. If that is important to you, please call ahead or say so in the order comments!
Danny and his friends try to convince a rich manufacturer that the Professor's new laser (heat ray) is useful enough for him to make a contribution to the University research fund.
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