Inside Out Library · ExploreStrength Tests on Thin-walled Duralumin Cylinders in Torsion (1932)NASA Technical Reports Server (NTRS) · leaf 12rig. 3 N.A.C.A. Technical Note No. 427NASA Technical Reports Server (NTRS)Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.More pictures from Strength Tests on Thin-walled Duralumin Cylinders in TorsionMore like this
