Ключевые слова: background, binder, binding, blank, blue, book, business, closeup, collection, colorful, construction, cover, design, education, engineering, group, heap, industrial, industry, information, iron, isolated, material, metal, notebook, object, office, orange, page, paper, pattern, pile, reading, research, round, school, sheet, space, spine, spiral, steel, study, technology, text, texture, traditional, vibrant, white, write,