Lunar occultations visible at Berlin, 1930.Published in:Astronomische Nachrichten, 1929, v. 237, n. 7, p. 119, doi. 10.1002/asna.19292370703By:Richards, Harold W. P.Publication type:Article
Tables to facilitate computation of that portion of the secular variation of precession which depends on proper motion.Published in:Astronomische Nachrichten, 1929, v. 237, n. 7, p. 105, doi. 10.1002/asna.19292370702By:Davis, Herman S.Publication type:Article
Masthead.Published in:Astronomische Nachrichten, 1929, v. 237, n. 7, p. fmi, doi. 10.1002/asna.19292370701Publication type:Article