Periodic solar variation
By: by C. G. Abbot.
Series: Smithsonian miscellaneous collections -- v. 128, no. 4; Publication -- 4213; Publication (Smithsonian Institution) -- 4213.
Publisher: Smithsonian Institution
Published: 1955
Place of publication: Washington
Language: eng
Number of pages: 20
Subjects: Solar radiation.; Cycles.
Notes: At head of title: Roebling Fund.