@book{ 0-1152503278, title = {Sitzung des Arbeitsausschusses Tagebautechnik}, series = {Freiberger Forschungshefte / A}, address = {Berlin}, publisher = {Akademie-Verl.}, year = {1962}, language = {German}, url = {https://katalog.ub.tu-freiberg.de/Record/0-1152503278} }