Classification
620 - Engineering & allied operations
328
531 - Classical mechanics; solid mechanics
84
621 - Applied physics
41
530 - Physics
40
541 - Physical chemistry
17
670 - Manufacturing
16
539 - Modern physics
11
543 - Analytical chemistry
9
691 - Building materials
9
546 - Inorganic chemistry
8
519 - Probabilities & applied mathematics
7
549 - Mineralogy
7
570 - Life sciences; biology
7
624 - Civil engineering
7
660 - Chemical engineering
5
571 - Physiology & related subjects
4
610 - Medicine & health
4
538 - Magnetism
3
677 - Textiles
3
333 - Economics of land & energy
2
534 - Sound & related vibrations
2
535 - Light & infrared & ultraviolet phenomena
2
537 - Electricity & electronics
2
540 - Chemistry & allied sciences
2
547 - Organic chemistry
2
548 - Crystallography
2
550 - Earth sciences
2
616 - Diseases
2
617 - Surgery & related medical specialties
2
628 - Sanitary & municipal engineering
2
629 - Other branches of engineering
2
641 - Food & drink
2
664 - Food technology
2
690 - Buildings
2
003 - Systems
1
006 - Special computer methods
1
363 - Other social problems & services
1
553 - Economic geology
1
572 - Biochemistry
1
580 - Plants (Botany)
1
627 - Hydraulic engineering
1
930 - History of ancient world to ca. 499
1