Ключевые слова: archive, back to school, book, book cover, bookcase, bookshelf, bookshop, business, cognition, collection, colourful, copy space, cut out, data, document, education, expertise, group of objects, hardcover, hardcover book, heap, horizontal, in a row, intelligence, learn, learning, library, literature, multi colored, no people, open, order, page, paper, read, reading, research, school, science, shelf, stack, stacking, study, studying, teaching, textbook, university, white color, wisdom,