Classification
670 - Manufacturing
14
621 - Applied physics
13
006 - Special computer methods
11
658 - General management
8
333 - Economics of land & energy
7
519 - Probabilities & applied mathematics
7
624 - Civil engineering
7
629 - Other branches of engineering
7
620 - Engineering & allied operations
6
641 - Food & drink
6
660 - Chemical engineering
6
664 - Food technology
6
628 - Sanitary & municipal engineering
5
690 - Buildings
4
338 - Production
3
370 - Education
3
551 - Geology, hydrology & meteorology
3
005 - Computer programming, programs & data
2
158 - Applied psychology
2
530 - Physics
2
553 - Economic geology
2
610 - Medicine & health
2
616 - Diseases
2
627 - Hydraulic engineering
2
003 - Systems
1
004 - Data processing & computer science
1
362 - Social welfare problems & services
1
363 - Other social problems & services
1
539 - Modern physics
1
581 - Specific topics in natural history
1
613 - Personal health & safety
1