Classification
621 - Applied physics
170
620 - Engineering & allied operations
13
629 - Other branches of engineering
9
005 - Computer programming, programs & data
6
006 - Special computer methods
5
004 - Data processing & computer science
4
003 - Systems
3
519 - Probabilities & applied mathematics
3
610 - Medicine & health
2
001 - Knowledge
1
300 - Social sciences
1
330 - Economics
1
510 - Mathematics
1
515 - Analysis
1
550 - Earth sciences
1