RGU-Photometrie der offenen Sternhaufen NGC 559,581,637,659 und Tr 1
By: von Emil Krušpan
Publisher: Brühlsche Universitätsdruckerei Giessen
Published: 1959
Place of publication: Giessen
Language: ger
Subjects: Stars; Open clusters; Photometry; Astronomical photometry
Notes: Inauguraldissertation (doctoral)--Universität Basel, 1957.

Includes bibliographical references (p. 8).