Links
- https://www.uni-bonn.de/
- https://www.uni-bonn.de/fakultaeten
- https://www.pi.uni-bonn.de/en/search#
- https://www.pi.uni-bonn.de/en/search?b_start:int=1480&sort_on=relevance
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- https://www.pi.uni-bonn.de/koehl/en/media/c_andreas_von_haaren_substrate_infront_of_interferometer.jpg/view
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