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Paper
thin, flexible material mainly used for writing upon, printing upon, drawing or for packaging / From Wikipedia, the free encyclopedia
Modern paper is a thin material of (mostly) wood fibres pressed together. People write on paper with a pencil or pen, and books are made of paper. Paper can absorb liquids such as water, so people can clean things with paper. There are many types of paper.
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The pulp and paper industry comprises companies that use wood as raw material and produce pulp, paper, board and other cellulose-based products.