File:PSM V36 D486 Howe and pratt bridge trusses.jpg

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Description Howe and Pratt bridge trusses
Date between 1889 and 1890
date QS:P,+1850-00-00T00:00:00Z/7,P1319,+1889-00-00T00:00:00Z/9,P1326,+1890-00-00T00:00:00Z/9
Source Popular Science Monthly Volume 36
Author Unknown authorUnknown author
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current06:55, 16 October 2010Thumbnail for version as of 06:55, 16 October 20101,616 × 765 (133 KB)Ineuw{{Information |Description = Howe and Pratt bridge trusses |Source = http://en.wikisource.org/wiki/Page:Popular_Science_Monthly_Volume_36.djvu/486 |Date = 1889-1890 |Author = Unknown |Permission = {{PD-old}} |other_versions = }} [[Category:Popular

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