Masthead.Published in:Astronomische Nachrichten, 1936, v. 261, n. 21, p. fmi, doi. 10.1002/asna.19362612101Publication type:Article
Hilfstafeln zur technischen Chronologie.Published in:Astronomische Nachrichten, 1936, v. 261, n. 21, p. 377, doi. 10.1002/asna.19362612102By:Neugebauer, P. V.Publication type:Article