Methods for specifying and measuring the characteristics of sound system equipment. Mechanical design features, Circular connectors for broadcast and similar use
33.160.30 Audio. Including tape recorders, records, magnetic tapes, cassettes, CDs, etc. / Аудиосистемы. Включая магнитофоны, пластинки, магнитные ленты, кассеты, компакт-диски и т.д.
