ANSI-S12.8 › Complete Document History
American National Standard Methods for Determination of Insertion Loss of Outdoor Noise Barriers
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1998 R20 EDITION - REAFFIRMED IN 2020 - June 19, 2020
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Obsolete Revision Information: |
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1998 EDITION - REAPPROVED IN 2013 - Jan. 1, 1998
1987 EDITION - Methods for Determination of Insertion Loss of Outdoor Noise - Jan. 1, 1987 |