Talk:Rudolf Herrnstadt

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There is a biography of Rudolf H. in German, which I do not read, and the info is as follows: Title: Der Fall Rudolf Herrnstadt: Tauwetteerpolitik vor dem 17.Juni Author: Helmut Muller-Engbergs Publisher: LinksDruck Verlags-GmbH Date: Mai 1991

There are many photos. The book apparently did not sell well and would be rare today. I have only one copy. I was not clear on how to add this info to the bibliography. If you can do so, please do!