Extra-galactic nebulae
By: by Edwin Hubble ...
Series: Contributions from the Mount Wilson Observatory.; no. 324
Published: 1926
Place of publication: [Chicago
Language: eng
Number of pages: 49
Subjects: Nebulae.; Milky Way.
Notes: Cover-title.
At head of title: Carnegie Institution of Washington.
"Reprinted from the Astrophysical Journal, vol. LXIV, 1926."