CDXC
Смотреть что такое "CDXC" в других словарях:
List of amateur radio organizations — Amateur radio organizations have been important from the earliest days of radio communications. In the early days, there was a very pragmatic reason for this. Amateur radio stations did not have a very wide range, so messages would often have to… … Wikipedia
490 — матем. • Запись римскими цифрами: CDXC … Словарь обозначений
