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The Effect of Rivet Heads on the Characteristics of a 6 by 36 Foot Clark Y Metal Airfoil (1933)
NASA Technical Reports Server (NTRS) · leaf 8
N.A.C.A. Technical Note Pig-2 • JNASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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