ISO 3166-1 [1 ] es la primera parte del estándar internacional de normalización ISO 3166, publicado por la Organización Internacional de Normalización (ISO), que proporciona códigos para los nombres de países y otras dependencias…
Many industrial, military or otherwise professional tubes were also produced. Only a few types are still used today, mainly in high-power, high-frequency applications and also in boutique guitar amplifiers.
The division was approved in 1936, with some minor changes and labelling the regions with numerals. The division was operational until the removal of all Catalan autonomy by the Francoist regime after the end of the Spanish Civil War. [36 ]