The depths of the universe
By: by George Ellery Hale ...
Publisher: C. Scribner's Sons
Published: 1924
Place of publication: New York; London
Language: eng
Number of pages: 98
Subjects: Astronomy.; Sunspots.
Notes: "Appeared during the last two years as articles in Scribner's magazine."--Pref.
Table of contents: title: The depths of the universe.; title: Barnard's dark nebulae.; title: Sun-spots as magnets.