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The Unknown Quantity
by Henry VAN DYKE | Jan 1, 1912
Unknown Quantity: Vincent Charles Perini Jr.'s Role in Oil and Uranium in the American West, 1953-58
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The Unknown Quantity
by O. Henry, Cathy Dobson, et al.
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![An Unknown Quantity. [a Tale.]](https://m.media-amazon.com/images/I/61mwgcDB05L._AC_UY218_.jpg)
An Unknown Quantity. [a Tale.]
by Violet. Hobhouse | May 3, 2010
