Books by William Joseph Rooney:
Books in the extended shelves:
![[X-Info]](https://onlinebooks.library.upenn.edu/infouc.gif)
Rooney, William Joseph, 1890-: Earth-current results at Tucson Magnetic Observatory, 1932-1942 (Carnegie Institution of Washington, 1949), also by Carnegie Institution of Washington. Dept. of Terrestrial Magnetism (page images at HathiTrust)
Find more by William Joseph Rooney at your library, or elsewhere.