Magnetic observation of sunspots, 1917-1924 ... /

Bibliographic Details

Main Author:	Hale, George Ellery, 1868-1938
Other Authors:	Nicholson, Seth Barnes, 1891-
Format:	Book
Language:	English
Published:	Washington, D.C. : Carnegie institution of Washington, 1938.
Series:	Papers of the Mount Wilson Observatory ; v. 5, pt. 1-2.
Subjects:	Sunspots.