Determination and discussion of the spectral classes of 700 stars mostly near the north pole

• Main Author: ten Bruggen Cate, Gerrit Hendrik
• Format: Doctoral or Postdoctoral Thesis
• Language: English
• Published: Drukkerij Gebroeders Hoitsema 1920
• Subjects: North Pole
• Online Access: http://hdl.handle.net/11370/0fc55466-4a38-4cfc-9d00-a12b9ddec26e; https://research.rug.nl/en/publications/determination-and-discussion-of-the-spectral-classes-of-700-stars-mostly-near-the-north-pole(0fc55466-4a38-4cfc-9d00-a12b9ddec26e).html; https://pure.rug.nl/ws/files/14501744/Ten_Bruggen_Cate_G_H.pdf