Books by Joe Ralph Hoffer:
Books in the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Hoffer, Joe Ralph, 1907-: Manual for a hand-sort punch-card system for indexing social welfare publications (Columbus, Ohio, 1963), also by National Conference on Social Welfare (page images at HathiTrust)- Hoffer, Joe Ralph, 1907-: A programmed introduction to PERT; program evaluation and review technique for planning large projects in social welfare (National Conference on Social Welfare, 1971), also by National Conference on Social Welfare (page images at HathiTrust)
Find more by Joe Ralph Hoffer at your library, or elsewhere.