Books by Ralph D. Thomas:
Books in the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Thomas, Ralph D.: Automated data collection system applied to Hall effect and resistivity measurements (National Aeronautics and Space Administration ;, 1967), also by Lewis Research Center (page images at HathiTrust)- Thomas, Ralph D.: Effect of load voltage on thin-film cuprous sulfide - cadmium sulfide solar cells thermally cycled in a simulated space environment (National Aeronautics and Space Administration, 1971), also by John J. Smithrick, United States National Aeronautics and Space Administration, and Lewis Research Center (page images at HathiTrust)
- Thomas, Ralph D.: Spectral emissivity of highly doped silicon (National Aeronautics and Space Administration ;, 1968), also by Curt H. Liebert and Lewis Research Center (page images at HathiTrust)
Find more by Ralph D. Thomas at your library, or elsewhere.