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Experiments with needle bearings (1933)
NASA Technical Reports Server (NTRS) · leaf 19
IT.A.C.A. Technical iiiemorandiia I'o. 707 Pigs.1,3,3 -15- CO lO Figure 1.NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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