Classification
006 - Special computer methods
500 - Natural sciences & mathematics
94
331 - Labor economics
52
658 - General management
29
620 - Engineering & allied operations
28
510 - Mathematics
27
330 - Economics
21
153 - Mental processes & intelligence
19
302 - Social interaction
19
745 - Decorative arts
17
621 - Applied physics
9
530 - Physics
8
384 - Communications; telecommunication
7
770 - Photography, photographs & computer art
6
332 - Financial economics
5
781 - General principles & musical forms
5
004 - Data processing & computer science
4
338 - Production
4
374 - Adult education
4
519 - Probabilities & applied mathematics
4
001 - Knowledge
3
003 - Systems
3
005 - Computer programming, programs & data
3
011 - Bibliographies
3
368 - Insurance
3
600 - Technology
3
381 - Commerce
2
629 - Other branches of engineering
2
066 - Organizations in Iberian Peninsula & adjacent islands
1
300 - Social sciences
1
303 - Social processes
1
700 - The arts; fine & decorative arts
1
741 - Drawing & drawings
1
794 - Indoor games of skill
1