Reduction of thirty-nine astrographic zones to the international photographic scale
By: by Frederick H. Seares and Mary C. Joyner ...
Contributors: Joyner, Mary C. b. 1889.
Series: Contributions from the Mount Wilson Observatory.; no. 305
Published: 1925
Place of publication: [Chicago
Language: eng
Number of pages: 17
Subjects: Stars -- Distribution.; Stars -- Photographic measurements.
Notes: Cover-title.
At head of title: Carnegie Institution of Washington.
"Reprinted from the Astrophysical Journal."