Johannes Haller
Johannes Haller (16 October 1865 – 24 December 1947) was a Baltic German medievalist and teacher at the universities of Tübingen, Marburg and Giessen.Haller was born in Käina and studied history in Tartu and at the Frederick William University in Berlin. He was expert in the field of the history of Christianity. He died in Tübingen. Provided by Wikipedia
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