Ключевые слова: 1978, aged, animal, antarctic, aquatic, canvas, card, collection, communication, deliver, elephant, envelope, fauna, freshwater, hobby, ichthyology, illustration, image, letter, mail, mammals, nature, nord, obsolete, old, past, perforated, philately, post, postage, postmark, russia, sea, send, stamp, ussr, vintage, water, zoology,