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Scavenging a Piston-ported Two-stroke Cylinder (1938)
NASA Technical Reports Server (NTRS) · leaf 31
Fig. 10 IT.A.C.A. Technical Vote to. 674 Figure 10.- Cylinder-heads (af compression ignition, b, spark ignition).NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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