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.
2016
1987
1950
1997
1996
2017
2023
2015
1990
2004
1994
2002
2007
2018
2005
1953
2013