Presentation of the economic upswing in the GDR, emphasizing the discovery of the process for the production of high-temperature lignite coke and the commissioning of the Lauchhammer large-scale coking plant.
1951
1992
1933
2018
1906
1907
1949
2009
2012
2024
2001
2020
2021
2017
2010
1934
1935