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12.1.025-81

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: 12.1.025-81
:
.: . . .
.:Occupational safety standards system. Noise. Determination of noise characteristics of noise sources in reverberation room. Precision method
: , , , , 12.1.003-83. .
: 31274-2004
:1 --1983-01-01 (. --1982-11-30)
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  • 12.1.025-81 .. -



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