Ключевые слова: book, bookcase, bookshelf, clock, closeup, collection, college, concept, culture, data, dictionary, document, education, eyeglasses, glasses, information, knowledge, law, learn, lens, library, literature, nobody, object, open, optical, page, paper, read, research, row, school, science, spectacles, stack, student, study, text, textbook, university, wisdom,