Books by R. A. Hoffman:
Books in the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Hoffman, R. A. (Robert Adolph), 1934-: NASA TN D-1700 (National Aeronautics and Space Administration, 1963), also by James M. Williamson, R. A. Davis, Goddard Space Flight Center, and United States National Aeronautics and Space Administration (page images at HathiTrust; US access only)
Find more by R. A. Hoffman at your library, or elsewhere.