Author: Oosterhoff, P. Th.
Title: The Variable Stars in Messier 5
Description: Haarlem, Joh. Enschede, 1941. orig.wrappers. 29x23cm, 48,(1) pp, Annalen van de Sterrewacht te Leiden, Deel XVI, 4e Stuk. photoplate,textual graphs. minor rubbing, VG

Keywords: Astronomy, , , , , , , ,