Proper motions in four galactic clusters ...
By: by E.G. Ebbighausen ...
Published: 1940
Place of publication: [Chicago
Language: eng
Number of pages: 698
Subjects: Stars -- Open clusters.; Stars -- Proper motion.
Notes: Thesis (PH. D.)--University of Chicago, 1940.
"Private edition, distributed by the University of Chicago libraries, Chicago, Illinois."
"Reprinted from the Astrophysical journal, vol. 89, no. 3, April, 1939; vol. 90, no. 5, December, 1939; vol. 91, no. 2, March, 1940; vol. 92, no. 3, November, 1940."