The solar constant and sunspot numbers
By: by L. B. Aldrich.
Contributors: Smithsonian Institution. Roebling Fund.
Series: Smithsonian miscellaneous collections,; v. 104, no. 12
Publisher: Smithsonian Institution
Published: 1945
Place of publication: Washington
Language: eng
Subjects: Solar radiation.; Sunspots.
Notes: Publication 3806.
At head of title: Roebling Fund.