@article{Wagner+1950+87+94, url = {https://doi.org/10.3790/schm.70.2.87}, title = {Deutsche Statistische Gesellschaft}, title = {}, author = {Karl Wagner}, pages = {87--94}, volume = {70}, number = {2}, journal = {Journal of Contextual Economics – Schmollers Jahrbuch}, doi = {doi:10.3790/schm.70.2.87}, year = {1950}, lastchecked = {1950-02-01} }