Classification
600 - Technology
3,352
620 - Engineering & allied operations
39
670 - Manufacturing
30
660 - Chemical engineering
28
006 - Special computer methods
23
621 - Applied physics
21
629 - Other branches of engineering
8
628 - Sanitary & municipal engineering
5
003 - Systems
4
333 - Economics of land & energy
4
610 - Medicine & health
3
658 - General management
3
330 - Economics
2
363 - Other social problems & services
2
580 - Plants (Botany)
2
062 - Organizations in British Isles; in England
1
140 - Specific philosophical schools
1
304 - Factors affecting social behavior
1
338 - Production
1
500 - Natural sciences & mathematics
1
519 - Probabilities & applied mathematics
1
530 - Physics
1
540 - Chemistry & allied sciences
1
541 - Physical chemistry
1
664 - Food technology
1
667 - Cleaning, color & coating technologies
1
691 - Building materials
1
696 - Utilities
1
697 - Heating, ventilating & air-conditioning
1
700 - The arts; fine & decorative arts
1
720 - Architecture
1