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Strain measurements on small duralumin box beams in bending (1937)
NASA Technical Reports Server (NTRS) · leaf 22
14 IB 18 20 22 24 26 # 30 32 34 36 38 40 42 8 10 12 2 4 0 Stress, 1,000 lb. per sq.in.NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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