Books by H. L. Gegel:
Books in the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Gegel, H. L.: Calculation of stacking fault energies for face-centered cubic metals (Wright-Patterson Air Force Base, Ohio : Directorate of Materials and Processes, Aeronautical Systems Division, Air Force Systems Command, United States Air Force, xxxx., 1962), also by United States. Air Force. Systems Command. Aeronautical Systems Division (page images at HathiTrust)- Gegel, H. L.: A Tensile testing apparatus for short fine filaments with optical-mechanical strain measurement (Wright-Patterson Air Force Base, Ohio : Aeronautical Systems Division, Air Force Systems Command, United States Air Force, 1961., 1961), also by J. E. Emrick, United States. Air Force. Systems Command. Aeronautical Systems Division, and United States. Air Force. Systems Command. Aeronautical Systems Division. Directorate of Materials and Processesd States (page images at HathiTrust)
Find more by H. L. Gegel at your library, or elsewhere.