system of open star clusters and our galaxy; atlas of open star clusters
By: [by] G. Alter and J. Ruprecht.
Contributors: Ruprecht, J.; Ceskoslovenska Akademie Ve d.
Publisher: Publishing House of the Czechoslovak Academy of Sciences; Academic Press
Published: 1963
Place of publication: Praha [i.e. Prague]; New York; London
Language: eng
Number of pages: 53
Notes: At head of title* Czechoslovak Academy of Sciences.

Prelims. in English and Russian.

Accompanied by 1 large map and 36 detailed maps, held together in back of folder.