ASTM WK33247(What is a Work Item? / How to Input to a Work Item)Work Item: ASTM WK33247 - Revision of C384 - 04 Standard Test Method for Impedance and Absorption of Acoustical Materials by Impedance Tube MethodActive Standard: C384 - 04(2011) Developed by Subcommittee: E33.01 | Committee E33 Home | Contact Staff Manager
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