Classification
GBH - Marine geology
149
GVA - Oceanography
103
GBHC - Ocean floor - sediments, morphology
25
GCAC - Regional geology - noneuropean countries
5
GMA - Geochemistry - general
4
GBAH - Stratigraphy, history of earth
3
GKA - Geophysics - general
3
GMAD - Organic geochemistry
3
UPVN - Ocean water, coastal waters
3
GBA - General geology, historical geology
2
GBEK - Plate tectonics, continental drift
2
GBEN - Tectonics
2
GDA - Engineering geology - general
2
GHA - Petrology - general
2
GHHD - Sedimentary transport, sedimentation
2
GMAB - Hydrogeochemistry
2
GRA - Meteorology
2
GRB - Climatology
2
GXAA - Polar research - arctic region
2
GAN - Geosciences - mathematical methods, computer applications
1
GBAK - Paleontology
1
GBC - Paleoclimatology
1
GBE - Geology - endogene processes, exogene processes
1
GBHA - Geology of coasts, geology of estuaries
1
GCA - Regional geology
1
GCAB - Regional geology - european countries
1
GHHF - Sedimentary basins
1
GHHM - Diagenesis
1
GKKA - Geophysical well logging
1
GMK - Geochemistry of elements, minerals, rocks
1
GWBA - Raw material resources, raw material reserves
1
GXAB - Polar research - antarctic region
1
LCO - Hydrobiology
1
LCQ - Marine research
1
UHN - Landscape ecology
1
UMV - Climatic change
1
UPCE - Water chemistry
1
UPP - Water pollution
1