Paper is the media of knowledge. We all greatly dependent on paper in our daily work. Paper was invented in china. The chinese people were first to use paper to write down letter on it. After that early days paper become the favourite media of information. We can not think of any prin meadia without paper. We should invent the new way to produce high quality of paper.
knol is an collerative dictionary. here is knol dictionary where every word, sentence or situation may have definition. wellcome to knol dictionary!
you can find sitemap in this page.
