Gold, Hay and Stubble
内容简介
John C. Sparks is a senior staff engineer at Wright-Patterson Air Force Base in Dayton, Ohio and has taught mathematics at Sinclair Community College for over twenty years. In late 2003, Sparks rec...
John C. Sparks is a senior staff engineer at Wright-Patterson Air Force Base in Dayton, Ohio and has taught mathematics at Sinclair Community College for over twenty years. In late 2003, Sparks rec...
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