The velocity-distance relation among extra-galactic nebulae
By: by Edwin Hubble and Milton L. Humason ...
Contributors: Humason, Milton L. 1891-1972, joint author.
Series: Contributions from the Mount Wilson Observatory.; no. 427
Published: 1931
Place of publication: [Chicago
Language: eng
Number of pages: 38
Subjects: Nebulae.; Milky Way.
Notes: Cover-title.
At head of title: Carnegie Institution of Washington.
"Reprinted from the Astrophysical Journal, vol. LXXIV, 1931."