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leon schumacher
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Potential impact of biodiesel on SDDOT
Leon G. Schumacher · Office of Research, S.D. Dept. of Transportation
192 sayfa · 2005
Biodiesel fuels
Principles of naval architecture and warship construction ...
George Charles Manning, Theodore Leon Schumacher · United States Naval Institute
353 sayfa · 1924
Naval architecture / Warships