Classification
620 - Engineering & allied operations
137
629 - Other branches of engineering
39
621 - Applied physics
35
531 - Classical mechanics; solid mechanics
16
530 - Physics
9
515 - Analysis
7
534 - Sound & related vibrations
7
519 - Probabilities & applied mathematics
4
670 - Manufacturing
4
690 - Buildings
3
003 - Systems
1
006 - Special computer methods
1
370 - Education
1
523 - Specific celestial bodies & phenomena
1
526 - Mathematical geography
1
550 - Earth sciences
1
600 - Technology
1
610 - Medicine & health
1
691 - Building materials
1
693 - Specific materials & purposes
1