File:PSM V12 D029 Hero engine.jpg

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Description Hero engine
Date between 1877 and 1878
date QS:P,+1877-00-00T00:00:00Z/8,P1319,+1877-00-00T00:00:00Z/9,P1326,+1878-00-00T00:00:00Z/9
Source Popular Science Monthly Volume 12
Author Unknown authorUnknown author
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current07:20, 29 July 2010Thumbnail for version as of 07:20, 29 July 2010615 × 659 (43 KB)Ineuw{{Information |Description = Hero engine |Source = http://en.wikisource.org/wiki/Page:Popular_Science_Monthly_Volume_12.djvu/29 |Date = 1877-1878 |Author = Unknown |Permission = {{PD-old}} |other_versions = }} {{GFDL-user-w|en|Wikisource|Ineuw}} [

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