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1
Published 1987
Springer New York
Table of Contents: “... The Scale of the Universe -- 2. Spherical Astronomy -- 2.1 Spherical Trigonometry -- 2.2 The Earth -- 2.3...”
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2
Published 1990
Springer Berlin Heidelberg
Table of Contents: “... -- 1.3 Die Größenskala des Universums -- 2. Sphärische Astronomie -- 2.1 Sphärische Trigonometrie -- 2.2...”