ACOUSTICS. DETERMINATION OF SOUND POWER LEVELS OF NOISE SOURCES. ENGINEERING METHODS FOR FREE-FIELD CONDITIONS OVER A REFLECTING PLANE
NORMA vydaná dňa 20.10.1988
Designation standards: UNE 74034:1988
Note: NEPLATNÁ
Publication date standards: 20.10.1988
The number of pages: 32
Approximate weight : 96 g (0.21 lbs)
Country: Spanish technical standard
Kategória: Technické normy UNE