"The Ullstein Verlag was founded by Leopold Ullstein in 1877 at Berlin and is one of the largest publishing companies of Germany. It published newspapers like B.Z. and Berliner Morgenpost and books through its subsidiaries Ullstein Buchverlage and Propyläen.
The newspaper publishing branch was taken over by Axel Springer AG in 1956." - (en.wikipedia.org 10.08.2021)
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