2012DIN 45645-2:2012-09 Determination of rating levels from measurement data - Part 2: Determination of the noise rating level for occupational activities at the work place for the level range underneath the given risk of hearing damage
2012DIN 45645-2:2012 Determination of rating levels from measurement data - Part 2: Determination of the noise rating level for occupational activities at the work place for the level range underneath the given risk of hearing damage
1997DIN 45645-2:1997 Determination of rating levels from measurements - Part 2: Noise immissions at the work place