Ключевые слова: academic, background, book, books, bookstore, brown, close, collection, college, copy, dictionary, education, encyclopedia, glasses, graduation, group, icon, illustration, information, isolated, knowledge, learn, library, literature, multi colored, object, old, paper, paperwork, pile, publication, read, retro, school, science, set, shelf, stack, study, studying, text, textbook, tutorials, university, vector, white, wisdom,