Inside Out Library · ExploreStrength Tests of Thin-walled Duralumin Cylinders in Pure Bending (1933)NASA Technical Reports Server (NTRS) · leaf 12NASA Technical Reports Server (NTRS)Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.More pictures from Strength Tests of Thin-walled Duralumin Cylinders in Pure BendingMore like this