File:Bridges 63.png
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Illustration from 1911 Encyclopædia Britannica, article Bridges. Original text: Thus, the Fink truss consists of king-post trusses; the Pratt truss (fig. 63) and the Whipple truss (fig. 64) of queen-post trusses alternately upright and inverted. |
| Source | assuming: http://www.gutenberg.org/ |
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This image comes from the 13th edition of the Encyclopædia Britannica or earlier. The copyrights for that book have expired in the United States because the book was first published in the US with the publication occurring before January 1, 1929. As such, this image is in the public domain in the United States. |  |
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This image comes from the Project Gutenberg archives. This is an image that has come from a book or document for which the American copyright has expired and this image is in the public domain in the United States and possibly other countries.
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| current | 20:43, 3 November 2006 | | 1,012 × 216 (4 KB) | Laverock~commonswiki (talk | contribs) | Illustration from 1911 Encyclopædia Britannica, article Bridges. Original text: Thus, the Fink truss consists of king-post trusses; the Pratt truss (fig. 63) and the Whipple truss (fig. 64) of queen-post trusses alternately upright and inverted. {{PD-B |
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