Classification
620 - Engineering & allied operations
172
621 - Applied physics
67
534 - Sound & related vibrations
52
781 - General principles & musical forms
24
629 - Other branches of engineering
13
530 - Physics
7
000 - Computer science, information & general works
4
660 - Chemical engineering
4
531 - Classical mechanics; solid mechanics
3
691 - Building materials
3
745 - Decorative arts
3
006 - Special computer methods
2
331 - Labor economics
2
510 - Mathematics
2
697 - Heating, ventilating & air-conditioning
2
780 - Music
2
003 - Systems
1
362 - Social welfare problems & services
1
363 - Other social problems & services
1
384 - Communications; telecommunication
1
500 - Natural sciences & mathematics
1
511 - General principles of mathematics
1
515 - Analysis
1
551 - Geology, hydrology & meteorology
1
650 - Management & auxiliary services
1
662 - Explosives, fuels & related products
1
690 - Buildings
1
800 - Literature & rhetoric
1