Ключевые слова: accumulation, ancient, arrangement, background, book, closed, closeup, college, different, educational, heap, idea, information, knowledge, learn, library, lifestyle, literature, many, nature, nobody, old, open, page, paper, pile, program, publication, quantity, read, school, science, sheet, sky, stack, student, style, tall, teach, text, training, university, vertical, volume, white, write,