Classification
GKAB - Geothermics
22
ELA - Geothermal energy
8
GKKF - Geothermic methods
4
GMA - Geochemistry - general
4
ETA - Energy storage
1
GAN - Geosciences - mathematical methods, computer applications
1
GBE - Geology - endogene processes, exogene processes
1
GKA - Geophysics - general
1
GKK - Geophysics - applications
1