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1
by Böhme, Siegfried, Fricke, Professor Dr. Walter, Heinrich, Inge, Hofmann, Wilfried
Published 1981
Springer Berlin Heidelberg
Subjects: “...Astronomy / Observations...”
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2
by Böhme, Siegfried, Fricke, Professor Dr. Walter, Heinrich, Inge, Hofmann, Wilfried
Published 1981
Springer Berlin Heidelberg
Subjects: “...Astronomy / Observations...”