📁 图书
This category is a central location for information about the non-commercial aspect of books. Such as links to author's homepage, the book's homepage, and links to supplementary material.
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Why don't I invent a wall mounted toothpaste dispenser to settle my frustration and make a lot of money at the same time?
http://writing.upenn.edu/epc/ezines/deluxe/three/dispenser.html