Classification
GBA - General geology, historical geology
165
GBE - Geology - endogene processes, exogene processes
10
GBAH - Stratigraphy, history of earth
5
GBAK - Paleontology
5
GCAA - Regional geology - Germany
5
AFK - Research institutions - Germany
4
GBAA - Geology - textbooks
4
GCAB - Regional geology - european countries
4
GCAC - Regional geology - noneuropean countries
4
GFA - Mineralogy - general
4
GHA - Petrology - general
4
GMA - Geochemistry - general
4
GRA - Meteorology
4
UHP - Protection of nature and landscape
4
GBC - Paleoclimatology
3
GBEC - Geomorphology
3
GBEK - Plate tectonics, continental drift
3
GHHD - Sedimentary transport, sedimentation
3
GNA - Geology - soil sciences
3
GVA - Oceanography
3
LWE - Agriculture - general aspects
3
UCA - Environmental problems, man and environment - general aspects
3
GBEA - Geochronology
2
GBED - Glaciology
2
GBEN - Tectonics
2
GBH - Marine geology
2
GHH - Sedimentary petrography - general
2
GHHF - Sedimentary basins
2
GKA - Geophysics - general
2
GMAD - Organic geochemistry
2
GRAD - Earth atmosphere, weather
2
UCJ - Environmental protection - general aspects
2
UHN - Landscape ecology
2
UPK - Water resources, water supply
2
AHZ - History of science and technology
1
DGA - Computer types, plants and organization
1
ECA - Energy resources
1
GAN - Geosciences - mathematical methods, computer applications
1
GBEE - Isotope geology
1
GBHC - Ocean floor - sediments, morphology
1
GDAA - Engineering geology - textbooks
1
GMAB - Hydrogeochemistry
1
GPA - Geobiology - general
1
GPAB - Flora, vegetation - geographical aspects
1
GRB - Climatology
1
GSC - Remote sensing
1
GTA - Hydrology - general
1
GWAA - Raw material programs
1
GWBA - Raw material resources, raw material reserves
1
GXA - Polar research - general
1
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