Books by E.R. ... Baumann:
Books in the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Baumann, E.R. ... [et.al]: A preliminary investigation of the effectiveness of a diatomite filter in the removal of radioactive phosphorus from water (University of Illinois, Department of Civil Engineering, 1951), also by H.E. Babbitt and H.F. Zobel (page images at HathiTrust)
Find more by E.R. ... Baumann at your library, or elsewhere.