@phdthesis{ 0-1009221485, title = {Regelung der Arbeitszeit und Intensität der Arbeit}, author = {Schmitz, Walter}, address = {Naumburg}, publisher = {Lippert}, year = {1910}, language = {German}, url = {http://nbn-resolving.org/urn:nbn:de:zbw-retromon-20013}, url = {https://katalog.ub.uni-leipzig.de/Record/0-1009221485} }