His earlier studies had focused on solar observation, but after the war he became increasingly concentrated on the Moon.
alter ego | Yisrael Alter | Victor Alter | Paul Alter | Dinsmore Homestead | Alter ego | Yehudah Aryeh Leib Alter | UMM Alter II | Tom Alter | The Old Rhine (''Alter Rhein'') in Höchst, Austria | The Exotic Sounds of the Alter Boys | Mayer Alter Horowitz | Jonathan Alter | Georg Leib's Gravestone - Alter Südfriedhof | David Dinsmore | David Alter | Bruce Dinsmore | Alter the Ending |