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0-9
 | 51 Mathematics |
| | 52 Space Research |
| | 53 Applied Physics |
| | 54 Chemistry |
| | 57 Biological Sciences |
| | 58 Botany |
| | 60 Biotechnology |
| | 61 Medical Sciences |
| | 62 Engineering |
| | 66 Chemical Technology |
| | 77 Photography |
| | 355 Defence Sciences |
| | 504 Environmental Sciences |
| | 531 Mechanics |
| | 532 Fluid Mechanics |
| | 535 Optics |
| | 536 Thermodynamics |
| | 537 Electromagnetism |
| | 543 Analytical Chemistry |
| | 544 Physical Chemistry |
| | 546 Inorganic Chemistry |
| | 547 Organic Chemistry |
| | 548 Crystallography |
| | 551 Geology |
| | 556 Hydrology |
| | 577 Biochemistry |
| | 579 MicroBiology |
| | 612 Physiology |
| | 615 Pharmacology |
| | 621 Mechanical Engineering |
| | 622 Civil Engineering |
| | 623 Military Science and Engineering |
| | 624 Civil Engineering |
| | 629 Transport Vehicle Engineering |
| | 631 Agriculture |
| | 641 Food Sciences |
| | 658 Management Sciences |
| | 665 Resins |
| | 669 Metallurgy |
| | 676 Paper Industry |
| | 678 Composite Materials |
| | 687 Textiles and Clothing |
| | 929 Biography |
| | 159.9 Psychology |
| | 358.4 Avionics |
| | 519.2 Statistics |
| | 519.8 Operations Research |
| | 528.8 Remote Sensing |
| | 531.3 Dynamics |
| | 532.5 Hydrodynamics |
| | 533.6 Aerodynamics |
| | 533.9 Plasma |
| | 534.8 Acoustics |
| | 536.2 Heat Transfer |
| | 537.6 Magnetism |
| | 538.9 Solid State Technology |
| | 539.1 Nuclear Physics |
| | 544.6 Electrochemistry |
| | 546.3 Metals |
| | 548.2 Crystal Growth |
| | 550.3 Geophysics |
| | 551.5 Meteorology |
| | 615.9 Toxicology |
| | 616.8 Neurology |
| | 620.1 Material Science and Technology |
| | 621.1 Engines |
| | 621.3 Electrical Engineering |
| | 623.4 Armaments and Ballistics |
| | 623.5 Armaments and Ballistics |
| | 623.8 Naval Science |
| | 629.5 Marine Sciences |
| | 629.7 Aeronautics |
| | 631.4 Soil Science |
| | 632.9 Pest Control |
| | 662.1 Pyrotechnics |
| | 662.3 Propellants |
| | 667.6 Paints |
| | 681.2 Instrumentation |
| | 681.3 Computer Science |
| | 681.5 Control Systems |
| | 514.84 Quantum Mechanics |
| | 531.55 Projectiles |
| | 535.44 Diffraction Methods |
| | 535.62 Spectrum Analysis |
| | 537.84 Magnetogasdynamic |
| | 537.84 Magnetohydrodynamic |
| | 539.42 Fracture Mechanics |
| | 551.32 Glaciology |
| | 551.46 Oceanography |
| | 551.51 Atmospheric Physics |
| | 551.58 Climatology |
| | 57.089 Biomedical Sciences |
| | 621.38 Electronics |
| | 621.39 Telecommunication |
| | 623.41 Weapon Systems |
| | 623.45 Ammunition |
| | 623.61 Military Communications |
| | 623.64 Terrain Studies |
| | 629.76 Rockets and Missiles |
| | 532.542 Fluid Dynamics |
| | 535.374 Radiation Hazards |
| | 537-962 Microwaves |
| | 551.466 Sea Waves |
| | 614.844 Fire Detection Systems |
| | 62.008.1 Technology Policy |
| | 620.261 Explosives |
| | 621.039 Nuclear Sciences |
| | 621.224 Turbines |
| | 621.438 Aircraft Gas Turbine Engines |
| | 623.459 Chemical Weapons |
| | 623.459 War Gases |
| | 629.331 Automobile Engineering |
| | 629.762 Missiles |
| | 662.61.9 Fuels |
| | 669.018 Alloys |
| | 681.324 Computer Networks |
| | 681.586 Sensors |
| | 621.039.8 Radioisotopes |
| | 621.131.5 Soil Mechanics |
| | 621.3.029 Electromagnetic Waves |
| | 621.396.9 Radars |
| | 623.4.021 Targets |
| | 624.131.5 Soil Dynamics |
| | 681.3:355 Computer Applications in Defence |
| | 681.5.017 Simulation |
| | 681.783.2 Laser Range Finder |
| | 551.521.37 Solar Energy |
| | 551.578.48 Avalanche |
| | 621.386.64 Radiography |
| | 681.315.61 Dielectric Materials |
| | 621.315.592 Semiconductors |
| | 621.375.826 Laser Science |
| | 623.454.833 Shock Waves |
| | 655.3.066.25 Packaging |
| | 621.78.019.84 Corrosion |