Ключевые слова: aged, antique, archive, black, blue, book, closed, collection, college, cover, dark, data, education, expertise, green, group, hardcover, information, knowledge, learn, library, literature, many, object, old, page, paper, pile, publication, quantity, read, reflection, reflective, research, school, science, shadow, sheet, stack, storage, student, study, surface, university, vintage, white, white background,