Observations of the Orion and Aquila rings
By: [by] David Crampton and John Byl.
Contributors: Byl, John, joint author.
Series: Publications of the Dominion Astrophysical Observatory, Victoria, B.C., v. 13, no. 18; Publications of the Dominion Astrophysical Observatory ;; v. 13, no. 8.
Publisher: Dept. of Energy, Mines and Resources, Observatories Branch
Published: 1971
Place of publication: [Ottawa]
Language: eng
Number of pages: 439
Subjects: Stars -- Motion in line of sight.; Parallax -- Stars.
Notes: Bibliography: p. 439.
Cover title.
Abstract in English and French.