Books by N. W. Spencer:
Books in the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Spencer, N. W. (Nelson W.), 1918-: Upper air research program. ([Michigan] : [The University], 1948., 1948), also by University of Michigan. Engineering Research Institute, A. Reifman, F.V. Schultz, and United States. Air Force. Air Matériel Command. Cambridge Field Station (page images at HathiTrust)
Find more by N. W. Spencer at your library, or elsewhere.