Ключевые слова: aged, ancient, antique, background, book, bookcase, bookshelf, brown, bulb, college, concept, design, education, electricity, idea, information, knowledge, lamp, learn, library, light, lightbulb, literary, literature, old, page, paper, pattern, print, read, research, retro, row, school, science, shelf, spine, stack, study, table, textbook, texture, think, university, vintage, wall, wallpaper, wisdom, wood, wooden,