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Recent suggestions in Diesel-engine construction (1927)
NASA Technical Reports Server (NTRS) · leaf 31
N.A.O.A. Technical Memorandum IJo.435 Figs.46,47 Fig.47 Auxiliary piston for forcing combustion air through the injected fuel sprays.NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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