Atlas borealis 1950.0
By: scientific editor: Prof. dr J.M. Mohr ; reviewer: Pavel Mayer.
Contributors: Mohr, J M.; Ceskoslovenská Akademie Věd.
Edition: 2nd ed.
Publisher: Sky Publishing Corporation
Published: 1972
Place of publication: Cambridge (Mass.)
Language: eng
Notes: At head of title: Czechoslovak Academy of Sciences.

'... contains all stars having precisely determinedpositions, without limitation as to magnitude, in the declination zone plus 30° to plus 90°." - title page verso.

Previous ed. 1962.