Specification for sound systems for emergency purposes.
NORM herausgegeben am 28.6.1991
Designation standards: BS 7443:1991
Note: UNGÜLTIG
Publication date standards: 28.6.1991
The number of pages: 14
Approximate weight : 42 g (0.09 lbs)
Country: British technical standard
Kategorie: Technische Normen BS