Classification
GPA - Geobiology - general
78
LCK - Ecology - general aspects
13
UHN - Landscape ecology
12
LCM - Terrestrial ecology
10
LWH - Agriculture - soil sciences
6
GPAB - Flora, vegetation - geographical aspects
5
UHP - Protection of nature and landscape
5
GRA - Meteorology
4
GSC - Remote sensing
4
GMAD - Organic geochemistry
3
GNA - Geology - soil sciences
3
GRB - Climatology
3
GUA - Geography - general
3
LCL - Biotopes, ecosystems
3
LCMC - Plants - ecology
3
LEN - Plant physiology
3
URA - Soil chemistry
3
GAA - Geosciences - reference books
2
GBE - Geology - endogene processes, exogene processes
2
GFAC - Specific minerals
2
GKAA - Earth crust, earth mantle, earth core
2
GMA - Geochemistry - general
2
GVA - Oceanography
2
LAL - Biology - general aspects
2
LCD - Ecology - comprensive works
2
LCH - Ecology - methods
2
LCN - Ecology - soil sciences
2
LCO - Hydrobiology
2
LCR - Ecology of microorganisms - land and water
2
LED - Botany - comprehensive works
2
LEK - Botany - systematics, taxonomy
2
LER - Plant physiology - ecological aspects
2
LKY - Bioinorganic chemistry
2
LWF - Agriculture - methods
2
UCA - Environmental problems, man and environment - general aspects
2
UMGE - Carbon capture and storage (CCS)
2
USDE - Domestic waste, plastics, paper
2
UVW - Special effects of hazardous materials
2
GBA - General geology, historical geology
1
GKA - Geophysics - general
1
GRBA - Climatology - general
1
GTA - Hydrology - general
1
GTAK - Hydrogeology
1
GUAA - Geography - physical
1
GUAB - Geography - anthropological
1
HAE - Popular medicine
1
HCI - Radiation biology, dosimetry
1
HYB - Public health, health politics
1
HYE - Environmental health
1
LCNA - Soil microbiology
1
more ...