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A recurrence formula for shear-lag problems (1939)
NASA Technical Reports Server (NTRS) · leaf 21
N.A.C.A. Technical Wcte No. 739 fig- 6 … (a) P - forces. Figure 6.- Division of forces into P - forces and X - forces.NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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