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Modern Manufacturing Equipment of the Ernst Heinkel Airplane Works (1938)

NASA Technical Reports Server (NTRS) · leaf 18

An illustration from Modern Manufacturing Equipment of the Ernst Heinkel Airplane Works, 1938, leaf 18 — !2J V O … Figure 9.- Cross-sectional change on contracting iuralumin tubes of different original diameter to 20 mm -diameter.

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$An illustration from Opticks, or, A treatise of the reflexions, refractions, inflexions and colours of light ; Also two treatises of the species and magnitude of curvilinear figures (1704)$