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Literature 1970, Part 1 - Bohme, Siegfried a Fricke, Walter a Guntzel-Lingner, Ulrich a Henn, Frieda a Krahn, Dietlinde a Zech, Gert
Astronomy and Astrophysics Abstracts. This time interval is near to that achieved by monthly abstracting journals, com pared to which our system of accumulating abstracts for about six months offers the advantage of greater convenience for the user.
