Photovisual magnitude differences of double stars
By: by K. Aa. Strand.
Series: Publications of the United States Naval Observatory ;; 2d ser., v. 18, pt. 5
Publisher: U.S. Govt. Print. Off.
Published: 1970
Place of publication: [Washington
Language: eng
Number of pages: 31
Subjects: Double stars.; Stars -- Magnitudes.
Notes: Bibliography: p. 21.