A simplified spectrohelioscope
By: by G. A. Mitchell.
Series: Contributions from the Mount Wilson Observatory ;; no. 599.
Published: 1938
Place of publication: [Chicago
Language: eng
Subjects: Spectrohelioscope.
Other titles: Spectrohelioscope
Notes: At head of title: Carnegie institution of Washington.
"Reprinted from the Astrophysical journal, vol. 88, 1938."