Ключевые слова: academic, aged, background, book, bookcase, bookshelf, bookshop, catalog, choose, closeup, cognition, college, concept, education, educational, grab, hardcover, human, indoor, information, inside, law, learn, library, life, literature, page, paper, read, reading, research, row, school, select, shelf, stack, study, studying, take, textbook, university, wisdom,