@book{ 0-1181935334, title = {Der Arbeitsdiamant: Bemerkungen über seine industrielle Bedeutung}, author = {Dannmeyer, Ferdinand and Hartleb, Ottomar}, address = {Hamburg}, publisher = {Winter}, year = {1929}, edition = {5. Aufl.}, language = {German}, url = {https://katalog.ub.tu-freiberg.de/Record/0-1181935334} }