@book{Neumann+2020, url = {https://doi.org/10.3790/9783428429196}, title = {Kalkulationsprobleme im Versicherungsbetrieb}, title = {}, author = {Leo Neumann}, publisher = {Duncker & Humblot}, address = {}, doi = {doi:10.3790/9783428429196}, isbn = {9783428429196}, year = {1973}, lastchecked = {2020} }