Classification
GTA - Hydrology - general
194
GAN - Geosciences - mathematical methods, computer applications
15
UPK - Water resources, water supply
12
GTAP - Hydrological investigation methods
10
UPC - Water - general aspects
10
UPVC - Groundwater
8
UPN - Water protection, water quality, clean water
7
GNA - Geology - soil sciences
6
GRB - Climatology
5
LCP - Limnology
5
GCAA - Regional geology - Germany
4
GMAB - Hydrogeochemistry
4
GVA - Oceanography
4
LCO - Hydrobiology
4
UAN - Environment - mathematical methods, computer applications
4
UPVF - Surface waters - streams, rivers, lakes
4
TKA - Civil engineering - general
3
UPCE - Water chemistry
3
UPT - Water pollution control and measurement
3
CHRV - Water and its properties
2
FEJP - Porous media, capillarity
2
GCAC - Regional geology - noneuropean countries
2
GHH - Sedimentary petrography - general
2
GKA - Geophysics - general
2
GMAC - Isotope geochemistry
2
GRA - Meteorology
2
GSC - Remote sensing
2
GUAA - Geography - physical
2
GXA - Polar research - general
2
LCM - Terrestrial ecology
2
TGBE - Electric and electronic measurement
2
UHN - Landscape ecology
2
UMV - Climatic change
2
AHA - Research and development, research politics - general
1
AHC - Research and development, research politics - Germany
1
CR - Nuclear chemistry, radiation chemistry
1
CT - Chemical methods of materials analysis
1
CTON - Tracer techniques
1
DPA - Electronic data processing - applications
1
GBA - General geology, historical geology
1
GBED - Glaciology
1
GDA - Engineering geology - general
1
GHF - Igneous rocks, metamorphic rocks
1
GMA - Geochemistry - general
1
GPA - Geobiology - general
1
GRAD - Earth atmosphere, weather
1
GRAK - Atmospheric precipitations
1
GTAK - Hydrogeology
1
GUA - Geography - general
1
GWA - Raw material economy, raw material policy
1
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