Ключевые слова: blue, broadcasting, business, communications, computer, continents, cutting, delivery, digitally, earth, electronics, energy, equipment, exhibition, futuristic, global, image, industry, information, international, internet, japan, letters, mail, picture, planet, post, postage, postal, postmail, postmark, power, soviet, space, sphere, stamps, system, technology, television, union, unique, ussr, vintage, world, zigzag,