Use these numbers to help you locate books in our stacks.
520-529 Astronomy
- 521 Celestial mechanics
- 522 Techniques, procedures, apparatus, equipment, materials
- 523 Specific celestial bodies and phenomena
- 525 Earth (Astronomical geography)
- 526 Mathematical geography
530-539 Physics
- 530 Theories, mathematical physics, states of matter, measurement
- 531 Classical mechanics
- 532 Fluid mechanics
- 533 Pneumatics (Gas mechanics)
- 534 Sound and related vibrations
- 535 Light and related radiation
- 536 Heat
- 537 Electricity and electronics
- 538 Magnetism
- 539 Modern physics
620-629 Engineering
- 620 Engineering and applied operations
- 621 Applied physics
- 621.1 Steam engineering
- 621.2 Hydraulic-power technology
- 621.3 Electrical, magnetic, optical, communications, computer engineering; electronics, lighting
- 621.4 Prime movers and heat engineering
- 621.5 Pneumatic, vacuum, low-temperature technologies
- 621.6 Blowers, fans, pumps
- 621.8 Machine engineering
- 621.9 Tools
- 622 Mining and related operations
- 623 Military and nautical engineering
- 624 Civil engineering
- 625 Engineering of railroads, roads
- 627 Hydraulic engineering
- 628 Sanitary engineering
- 629 Other branches of engineering
See also
- 519 Probabilities and applied mathematics
- 541 Physical chemistry
- 548 Crystallography
- 551.5 Meteorology
- 610.153 Medical physics
