Photographic magnitudes of proper-motion stars
By: by Howard C. Willis ...
Series: Contributions from the Mount Wilson Observatory.; no. 502
Published: 1934
Place of publication: [Chicago
Language: eng
Subjects: Stars -- Magnitudes.; Stars -- Proper motion.; Stars -- Photographic measurements.
Notes: Cover-title.
At head of title: Carnegie Institution of Washington.
"Reprinted from the Astrophysical Journal, vol. 80, 1934."