Classification
YUC - Comprehensive statistical data
19
AHF - Research and science
9
UPK - Water resources, water supply
7
AMA - Education - general
6
GTA - Hydrology - general
6
UCA - Environmental problems, man and environment - general aspects
5
UA - Environment - general
4
GTAK - Hydrogeology
3
LGN - Zoology - anatomy, systematics, embryology
3
LWY - Fishery and aquaculture
3
MIEF - Nonlinear problems in functional analysis
3
PKA - Elementary particles, nuclei - general
3
UCN - Environmental education
3
A - General ( journals )
2
AHM - Theory of science
2
CB - Inorganic chemistry
2
CE - Organic chemistry
2
CR - Nuclear chemistry, radiation chemistry
2
EIE - Solar equipment
2
EIP - Photovoltaics
2
FAF - Materials research - comprehensive works
2
FAP - Advanced materials - development and applications
2
FFA - Surface science, surface physics - general aspects
2
FJN - Optical properties of solids
2
FJNH - Excited states in solids
2
FLA - Low temperature physics - general aspects
2
GCAC - Regional geology - noneuropean countries
2
GPAC - Aquatic biology - geographical aspects
2
GUAA - Geography - physical
2
GVA - Oceanography
2
LCK - Ecology - general aspects
2
LCO - Hydrobiology
2
LHH - Microbiology - methods
2
LHL - Microbiology - general aspects
2
LWV - Agriculture - plant protection
2
MWF - Programming, optimization, control theory
2
PEJ - Laser physics, laser materials
2
PJA - Atomic physics - general
2
PKC - Elementary particles, nuclei - general theory
2
PKK - Theory of fields and particles - general
2
PKL - Elementary particles - interactions, reactions, resonances
2
PLA - Astrosciences - general
2
UPN - Water protection, water quality, clean water
2
UPVC - Groundwater
2
UXAH - Radioisotopes in water
2
YPB - Economy - general aspects
2
YZA - Politics, political science
2
ZCB - Information science
2
AED - Official corporations - international and supranational
1
AEQ - Universities, academies - international and supranational
1
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