Books by P.K. contributor Shefsiek:
Books in the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Shefsiek, P.K. contributor: Research and development for barium vapor-filled thermionic energy conversion technology : summary report (Office of Technical Services, Dept. of Commerce, 1964), also by Martin Company, M.E. contributor Talaat, A.J. contributor Kennedy, U.S. Atomic Energy Commission, and Martin Company. Nuclear Division (page images at HathiTrust)
Find more by P.K. contributor Shefsiek at your library, or elsewhere.