1803+78: A Helical Core Jet

180TA Production in p, N-Reaction

180th Meeting of the American Astronomical Society

1818 I (Pons-Coggia-Winnecke-Forbes) Supplementary note on the orbit of, at various apparitions

181st Meeting of the American Astronomical Society

1827 Sternbedekkungen vom Monde, in Prag u. Neuschloß beobachtet von Herrn. Prof. David

1829 Mond u. Stern nach Beilage a. N. Nr. 147 auf der Prager Sternwarte be obachtet

182nd Meeting of the American Astronomical Society

183 GHz H$_2$O maser emission around the low-mass protostar Serpens SMM1

183 GHz InP MMIC Based Radiometer

183 GHz Mixer on InGaAs Schottky Diodes

183 GHz water emission in W 49N.

183 GHz water line variation - an energetic outburst in Orion KL

183 GHz water line variation in Orion.

183 GHz water line variation: an energetic outburst in orion KL

183 photographic positions of nine minor planets obtained at ESO-La Silla in February 1986.

1830 Kometenbeobachtungen auf der Prager Sternwarte

1830-211 - A flat-spectrum radio source with double structure

1830-211 - Gravitational Lensed Images of a Flat-Spectrum Radio Core

1831 u. 1832 Astron. Beobachtungen angestellt auf der k. Sternwarte zu Prag von Prof. David, Bittner u. Watzel, Diener der Sternwarte