@book{Mayer+2019, url = {https://doi.org/10.3790/9783428470297}, title = {Die Bundespost: Wirtschaftsunternehmen oder Leistungsbehörde}, title = {}, author = {Barbara Mayer}, publisher = {Duncker & Humblot}, address = {}, doi = {doi:10.3790/9783428470297}, isbn = {9783428470297}, year = {1990}, lastchecked = {2019} }