Classification
001 - Knowledge
2
004 - Data processing & computer science
1
005 - Computer programming, programs & data
4
006 - Special computer methods
3
153 - Mental processes & intelligence
2
303 - Social processes
2
330 - Economics
6
331 - Labor economics
1
332 - Financial economics
1
338 - Production
3
384 - Communications; telecommunication
1
500 - Natural sciences & mathematics
6
510 - Mathematics
2
515 - Analysis
1
600 - Technology
1
620 - Engineering & allied operations
13
621 - Applied physics
1
628 - Sanitary & municipal engineering
1
658 - General management
15
670 - Manufacturing
5