File:PSM V19 D347 Table of sound penetration of various materials.jpg

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Description Table of sound penetration of various materials
Date
Source Popular Science Monthly Volume 19
Author Unknown authorUnknown author
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current06:37, 16 February 2011Thumbnail for version as of 06:37, 16 February 20113,520 × 1,132 (363 KB)Ineuw{{Information |Description = Table of sound penetration of various materials |Source = http://en.wikisource.org/wiki/Page:Popular_Science_Monthly_Volume_19.djvu/347 |Date = 1881 |Author = Unknown |Permission = {{PD-old}} |other_versions = }} [[Cat
04:09, 21 August 2010Thumbnail for version as of 04:09, 21 August 20103,500 × 1,116 (292 KB)Ineuw{{Information |Description = Table of sound penetration of various materials |Source = http://en.wikisource.org/wiki/Page:Popular_Science_Monthly_Volume_19.djvu/347 |Date = 1881 |Author = Unknown |Permission = {{PD-old}} |other_versions = }} [[Cat

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