Contributions to the photographic study of colour, resolution and total magnitude of anagalactic objects with special regard to objects photographed at Helwan
By: by Björn Svenonius
Series: Annals of the Observatory of Lund -- no. 7
Publisher: Published by the Observatory
Published: 1938
Place of publication: Lund, Sweden
Language: eng
Number of pages: 160
Subjects: Clusters; Nebulae; Stars; Astronomical photography
Notes: Academical dissertation--Lund.

Extra t.-p., with thesis note, and imprint (Lund, Printed by Hakan Ohlsson, 1938) inserted.

Descriptive letterpress on recto of plate 1.