Classification
GBH - Marine geology
GVA - Oceanography
66
GBHC - Ocean floor - sediments, morphology
18
GBAH - Stratigraphy, history of earth
3
GBA - General geology, historical geology
1
GBC - Paleoclimatology
1
GCA - Regional geology
1
GHHD - Sedimentary transport, sedimentation
1
GHHF - Sedimentary basins
1
GKA - Geophysics - general
1
GMA - Geochemistry - general
1
GXAB - Polar research - antarctic region
1
LCQ - Marine research
1
UMV - Climatic change
1
UPVN - Ocean water, coastal waters
1