Periodicals, Proceedings, Books, Activities
Part of the Astronomy and Astrophysics Abstracts book series (AAA, volume 18)
KeywordsGerman Democratic Republic Astronomical Society East 45th Street Royal Greenwich Observatory Astronomical Object
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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© Springer-Verlag Berlin Heidelberg 1977