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ISO/R 1999:1971

Acoustics — Assessment of occupational noise exposure for hearing conservation purposes ISO/R 1999:1971

Publication date:   Jan 15, 1971

95.99 Withdrawal of Standard   Aug 1, 1975

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95.99 Withdrawal of Standard   Aug 1, 1975

ISO

ISO/TC 43 Acoustics

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ISO/R 1999:1971
95.99 Withdrawal of Standard
Aug 1, 1975

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ISO 1999:1975