Ключевые слова: academic, analyze, background, batch, book, bookshelf, collection, color, colorful, colourful, computer, cover, cutout, education, expertise, green, group, hardcover, heap, information, isolated, knowledge, learn, library, literature, many, multicolored, object, paper, pile, piled, read, red, row, school, science, screen, spine, stack, study, studying, textbook, university, vintage, white, wisdom, writing, yellow,