Index for 1921

This index is created for quick reference of all the pages within the Scholarly Publications repository of Leiden University. For searching our outputs, please use the search function.

  1. Report of the Director of the Observatory at Leiden for the period from May 1 1919 to August 31 1921

    Added on 2006-12-21

  2. Stars possibly belonging to the group of the Hyades, selected from a comparison between A. G. Berlin A and A. G. Berlin B with Abbadia 1915

    Added on 2006-12-21

  3. On a method of Prof. Kapteyn for the determination of the collimation error of a meridian instrument applicable in different zenith distances (Errata: 1 19)

    Added on 2006-12-21