Classification
GBHC - Ocean floor - sediments, morphology
8
GVA - Oceanography
5
GBH - Marine geology
3
GKA - Geophysics - general
3
GMAD - Organic geochemistry
3
GBAH - Stratigraphy, history of earth
2
GDA - Engineering geology - general
2
GMA - Geochemistry - general
2
GPA - Geobiology - general
2
GBA - General geology, historical geology
1
GBAK - Paleontology
1
GBEN - Tectonics
1
GCAA - Regional geology - Germany
1
GCAC - Regional geology - noneuropean countries
1
GHA - Petrology - general
1
GHH - Sedimentary petrography - general
1
GHHM - Diagenesis
1
GMAB - Hydrogeochemistry
1
LKE - Biochemistry - general aspects
1