Ключевые слова: abstract, aged, ancient, background, book, bookcase, books, brown, business, closeup, collection, college, covered, culture, education, heap, heritage, information, knowledge, learn, learning, library, literature, many, memory, old, paper, pattern, pile, read, research, school, science, shelf, stack, study, studying, text, textbook, texture, tower, university, vintage, weathered, wisdom, writers,