| CODE |
FIELDS |
| A |
SCIENCES |
| AA |
S&T in general |
| AB |
Mathematics |
| AC |
Documentation |
| AD |
Measurement |
| AE |
Psychology |
| B |
PHYSICS |
| BA |
Physics (in general) |
| BB |
Vibration, Sound |
| BC |
Fluid Mechanics |
| BD |
Electromagnetism, Optics |
| BE |
Elementary particle, nuclear physics |
| BF |
Elementary particle and field physics |
| BG |
Nuclear physics |
| BH |
Atom, molecule |
| BJ |
Fluid, plasma, spark |
| BK |
Material strucuture, radiation physics |
| BL |
Mechanical and thermal properties |
| BM |
Electric, magnetism and optical properties |
| C |
BASIC CHEMISTRY |
| CA |
Chemistry (in general) |
| CB |
Phsyical chemistry |
| CC |
Analytical chemistry, Separation process |
| CD |
Inorganic chemistry |
| CE |
Complex chemistry |
| CF |
Organic chemistry |
| CG |
Polymer chemistry |
| D |
SPACE, GEOSCIENCES |
| DA |
Space, geoscience (in general) |
| DB |
Cosmic rays, astrophysics |
| DC |
Geophysics |
| DD |
Geochemistry |
| DE |
Geology |
| DF |
Geography |
| E |
BIOLOGICAL SCIENCES |
| EA |
Biological sciences (in general) |
| EB |
Biochemistry |
| EC |
Genetics, evolution theory |
| ED |
Biological defence, immune system |
| EE |
Ecology, environmental biology |
| EF |
Cytology |
| EG |
Microbiology, virus science |
| EH |
Botanics |
| EJ |
Zoology |
| EK |
Radioative biology |
| EL |
Bioengineering |
| F |
AGRICULTURE, FISHERIES AND FORESTRIES |
| FA |
Agriculture, forestry and fisheries (in general) |
| FB |
Agriculture |
| FC |
Cultivation |
| FD |
Breeding |
| FE |
Veterinary medicine |
| FF |
Forestry |
| FG |
Wild animals, hunting |
| FH |
Fishery |
| FJ |
Food and foodengineering |
| FK |
Fermentation |
| G |
MEDICINE |
| GA |
Medicine in general |
| GB |
Preventive medicine |
| GC |
Medicine (introduction) |
| GD |
Etiological medicine |
| GE |
Oncology |
| GF |
Dermatology |
| GG |
Medicine of the motion vessel system |
| GH |
Medicine of the digestive system |
| GI |
Medicine of the respiratory system |
| GJ |
Medicine of the circulatory system |
| GK |
Blood medicine |
| GL |
Endocrinology |
| GM |
Urogenitology |
| GN |
Neuroscience |
| GP |
Ophtamology |
| GQ |
Otolaryngology |
| GR |
Psichiatry |
| GS |
Gynecology, obstetrics |
| GT |
Dentistry |
| GU |
Pharmaceutics (general) |
| GV |
Pharmaceutics |
| GW |
Pharmacology |
| GX |
Antibiotics, Herbal medicine |
| GY |
Pharmacy |
| GZ |
Toxicology |
| H |
ENGINEERING |
| HA |
Engineering (in general) |
| HB |
Materias testing |
| HC |
Materials mechanics |
| HD |
Structural mechanics |
| HE |
Rock mechanics |
| I |
ENGINEERING OF SYSTEMS AND CONTROL |
| IA |
Engineering of systems and control |
| IB |
System Engineering |
| IC |
Control engineering |
| J |
INFORMATION ENGINEERING |
| JA |
Information engineering (in general) |
| JB |
Information engineering (theory and fundamentals) |
| JC |
Computational methods, hardware |
| JD |
Computational software |
| JE |
Computational application |
| K |
INDUSTRIAL ENGINEERING |
| KA |
Industrial engineering |
| KB |
Production engineering |
| L |
ENERGY ENGINEERING |
| LA |
Energy engineering (in general) |
| LB |
Energy (resources and development) |
| LC |
Energy (conversion and storage) |
| LD |
Energy (consumption and saving) |
| LE |
Energy (utilization and environment) |
| M |
ATOMIC ENERGY |
| MA |
Atomic energy (in general) |
| MB |
Radiaoative rays management |
| MC |
Radiation source, utilization of radiation and isotope |
| MD |
Reactor engineering, nuclear fuel |
| N |
ELECTRIC ENGINEERING |
| NA |
Electric engineering (in general) |
| NB |
Power engineering |
| NC |
Electronical engineering |
| ND |
Telecommunications engineering |
| P |
THERMAL ENGINEERING |
| PA |
Thermal engineering |
| PB |
Heat engineering |
| PC |
Air conditioning |
| PD |
Freezing |
| Q |
MECHANICAL ENGINEERING |
| QA |
Mechanical engineering (in general) |
| QB |
Machine elements, lubrication |
| QC |
Machining, machine assembly |
| QD |
Fluid Machinery |
| QE |
Industrial machinery |
| QF |
Precision machinery |
| QG |
Automobile |
| QH |
Rolling stock |
| QJ |
Ships |
| QK |
Flying bodies |
| R |
CONSTRUCTION ENGINEERING |
| RA |
Construction engineering (in general) |
| RB |
Architectural engineering |
| RC |
Civil engineering |
| RD |
Urban engineering |
| S |
ENVIRONMENTAL ENGINEERING |
| SA |
Environmental engineering (in general) |
| SB |
Environmental pollution |
| SC |
Environmental sanitation |
| T |
TRANSPORT TRAFFIC |
| TA |
Transport traffic (in general) |
| TB |
Road transport |
| TC |
Railway transportation |
| TD |
Waterborne transportation |
| TE |
Air transportation |
| U |
MINE ENGINEERING |
| UA |
Mine enginering |
| W |
METALLURGICAL ENGINEERING |
| WA |
Metallurgical engineering (in general) |
| WB |
Metallography |
| WC |
Metal processing technology |
| WD |
Metal smelting and refining |
| WE |
Metallic materials |
| X |
CHEMICAL ENGINEERING |
| XA |
Chemical engineering (in general) |
| XB |
Chemical equipments, chemical plants |
| XC |
Chemical processes |
| XD |
Unit operations, equipments |
| XE |
Chemical operations, equipments |
| Y |
INDUSTRIAL CHEMISTRY |
| YA |
Industrial Chemistry (in general) |
| YB |
Inorganic industrial chemistry |
| YC |
Ceramics |
| YD |
Organic Industrial chemistry |
| YE |
Fuel and explosive industry |
| YF |
Petroleum industry |
| YG |
Fatty oil, detergent and cosmetic industry |
| YH |
Rubber and plastic industry |
| YJ |
Color material industry |
| YK |
Adhesive industry |
| YL |
Paper and pulp industry |
| YM |
Textile industry |
| Z |
OTHER INDUSTRIES |
| ZA |
Photoprinting industry |
| ZB |
Commodity industry |
