RUG faculteit wiskunde en natuurwetenschappen sterrenkunde

The Blaauw Collection



Title Dark clouds in Kapteyn's special areas 2, 5, 9 and 24 ....
Author Hiemstra, B.
Date 1938-05-18
Institute Rijksuniversiteit Groningen
Supervisor Prof. Dr. P. J. van Rhijn
Cat. number 35
Remarks Full title : Dark clouds in Kapteyn's special areas 2, 5, 9 and 24 and the proper motions of stars in these regions

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