Photometric Measurements of the Variable Stars B Persei and DM. 81>0 25, Made at the Harvard College

This book presents the results of photometric measurements of the variable stars B Persei and DM 810 25 made at the Harvard College Observatory in the early 20th century. The authors describe the methods used in their research and provide detailed data on the brightness and variability of the stars studied. The book also includes a wealth of illustrations and charts.

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