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DIN EN ISO 9614-1/A1:2009-05

Отменен
Acoustics - Determination of sound power levels of noise sources using sound intensity - Part 1: Measurement at discrete points (ISO 9614-1:1993); English version FprEN ISO 9614-1:2009, Amendment 1
DIN EN ISO 9614-1/A1:2009-05
Отменен