This is a brief translated version of scientific rubricator used in the Russian Academy of Sciences expert database. English translation is limited to two levels (three-digit codes). 
 Lower levels, as well as the areas beyond the list presented here can be found in Russian in complete version available at http://www.rascommission.ru/rubricator 
(for natural sciences and math, see Group A; for engineering and computer science, see group Б; for Medicine, see grou ; for Agriculture see group Г; for history and philology, see group Д; for social and political science, see group E). [1] 000 Math
 001 Mathematical logic and foundations 
 002 Algebra 
 003 Number theory 
 004 Algebraic and complex geometry 
 005 Geometry 
 006 Topology 
 007 Lie algebras and Lie groups, representation theory 
 008 Function theory, functional analysis 
 009 Complex analysis 
 010 Dynamical systems and ordinary differential equations 
 011 Partial differential equations 
 012 Mathematical physics 
 013 Probability theory and statistics 
 014 Combinatorics and discrete mathematics 
 015 Theoretical aspects of informatics (see also K410) 
 016 Control theory and optimization (see also T810, K4101, K4102) 
 017 Numerical mathematics 
 018 Mathematical modeling for natural science 
100 Physics 110 General issues of theoretical physics 
 120 Physics of elementary particles 
 130 Nuclear physics` 
 140 Atomic and molecular physics 
 150 Wave phenomena 
 160 Plasma physics 
 170 Condensed matter physics 
 180 Applied physics  
200 Chemistry  201 Molecular level modelling of substances and reactions 
 202 Inorganic and coordination chemistry 
 203 Solid state chemistry 
 204 Organic chemistry 
 205 Elementorganic chemistry 
 206 Polymers chemistry 
 207 Equilibria and processes in solutions, melts, and supercritical fluids 
 208 Low temperature chemistry. Chemical kinetics in vitreous media 
 209 Colloid chemistry, dispersed systems, and interfacial phenomena 
 210 Adsorption, heterogeneous catalysis 
 211 Electrochemistry 
 212 High energy chemistry. Atmosphere chemistry and astrochemistry 
 213 Research aspects of chemical engineering 
 214 Biochemistry 
 215 Bioorganic chemistry 
 216 Analytical chemistry (see also 410) 
 217 Radiochemistry 
 218 Chemoinformatics and chemometrics 
 219 Chemically oriented areas of chemical physics and biochemical physics  
300 Biology  301 Biophysics 
 302 Biochemistry (see also 214, 215) 
 303 Enzymology (see also 2141, 2194) 
 304 Molecular biology (see also 214, 215, 2193, 2194) 
 305 Bioinformatics (computational molecular biology) 
 306 Systems biology 
 307 Structural biology 
 308 Cellular biology and cytology 
 309 Immunology 
 310 Phytobiology 
 311 Biotechnology 
 312 Pharmacology 
 313 Molecular medicine 
 314 Genetics 
 315 Histology 
 316 Human and animal physiology 
 317 Developmental biology 
 318 Radiobiology 
 319 Organismal biology 
 320 Evolutionary biology 
 321 Microbiology 
 322 Virusology 
 323 Ecology (see also 87025, 87029) 
 324 Soil science (see also 87023) 
 325 Etology and animal psychology 
 326 Mathematical and theoretical biology 
 327 Medical instrumentation  
500 Astronomy  501 Astrophysical processes 
 502 Theory of gravitation and cosmology 
 503 Galaxies (including Milky Way) 
 504 Stars and interstellar medium 
 505 Sun and interplanetary space 
 506 Planets and small bodies of the solar system, exoplanets 
 507 Celestial mechanics and astrometry 
 508 Formation of Solar system and a systems of exoplanets 
 509 Astronomical methods and instruments 
 510 Astronomical databases and catalogs  
600 Mechanics  610 Theoretical mechanics 
 620 Mechanics of fluids, gas, and plasma 
 630 Turbulence 
 640 Мechanics of deformable solids 
 650 Integrated and special issues of mechanics  
800 Earth Science  810 Geology 
 820 Geochemistry, petrology, mineralogy 
 830 Geophysics 
 840 Physics of ionosphere and magnetosphere 
 850 Oceanology 
 860 Atmosphere physics and climate 
 870 Geography, ecology, and environmental science 
 880 Mining sciences 
 890 Natural hazards, technogeneous accidents and risks  
T Engineering sciences  T100 Power engineering 
 T200 Mechanical Engineering 
 T300 Instrument making 
 T400 Building 
 T500 Transport 
 T600 Metallurgy and technologies of materials 
 T700 Industrial ecology 
 T800 Control theory and optimization (see also 016)  
K Computer science  K000 Hardware 
 K100 Computer nets and clusters 
 K200 Telecommunication 
 K300 Software 
 K400 Algorithms 
 K500 Numerical calculations 
 K600 Information systems, data storage, web technologies 
 K700 Information security 
 K800 Applies information systems 
 K900 Human-computer interaction 
 [
For Medicine and Agriculture, detailed sections of rubricator can be translated and added] 
 [1] One can use various combinations of codes, as well as key words. A 
systematic list of key words in Russian can be found in 
Section 400 of the complete version, it includes techniques, materials, substances, technologies and devices.