BS 530:1937

Graphical symbols for telephony, telegraphy and radio communication..

NORMA vydaná dňa 18.1.1937

The information about the standard:

Designation standards: BS 530:1937
Note: NEPLATNÁ
Publication date standards: 18.1.1937
Approximate weight : 300 g (0.66 lbs)
Country: British technical standard
Kategória: Technické normy BS