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Concrete ships : historical notes concerning them and a discussion of the problems involved in their construction (1918)
Kircher, Paul · leaf 98
AT PORSGPJJHD CEMENTSTOEBEHI • 46Ships, Concrete · Reinforced concrete construction · Theses
Internet Archive · University of Illinois Urbana-Champaign · Public Domain Mark 1.0. Free to use for anything.
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