A spectroscopic study of the motions in Messier 33⁺
Publisher: Space Division, Kitt Peak National Observatory
Published: 1963
Place of publication: Tucson, Ariz
Language: eng
Number of pages: 19
Subjects: Spiral galaxies; Spectra; Observations
Other titles: Messier 33⁺; Spectroscopic study of the motions in Messier 33
Notes: Title from caption.

Includes bibliographical references (leaf 13).