According to the purpose of books, they can be divided into ordinary books and reference books; According to the characteristics, it can be divided into thread-bound books, hardcover books, paperback books, bagged books, e-books, audio books, books for the blind and national language books.
Books are the main tools used by human beings to record all achievements, generally referring to the collection of bound papers printed with words. They are also an important medium for human beings to blend feelings, inherit knowledge and gain experience, which is of great significance to the development and inheritance of human civilization and an important tool for human beings to spread and record knowledge.
The maintenance of books is mainly anti-aging, pest control, decontamination and other comprehensive maintenance. The main method to prevent books from aging and embrittlement is to remove acid from paper. At present, the most commonly used method is to soak books in magnesium bicarbonate or calcium bicarbonate solution, and then dry them, which can remove the acid from the paper and prevent the acid reaction from happening again in the future. The method of preventing insects is mainly that the items in the library should be clean, dry and well ventilated; There should be no cracks on bookshelves, walls or floors; Move your books frequently, even if you don't use them often, turn them over regularly. If decontamination is mainly to remove oil stains, ink stains, mildew spots, fingerprints and flies. Comprehensive maintenance generally means that it is limited to the paper cover, and it is beneficial to the preservation of the book by gently painting it with water.