Autogenous Welding in Airplane Construction, report, July 1929; (https://digital.library.unt.edu/ark:/67531/metadc277565/m1/1/: accessed April 24, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .
Autogenous Welding in Airplane Construction, report, July 1929; (https://digital.library.unt.edu/ark:/67531/metadc277565/m1/1/: accessed April 24, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .