Classification
000 - Computer science, information & general works
1
001 - Knowledge
3
003 - Systems
5
004 - Data processing & computer science
7
005 - Computer programming, programs & data
11
006 - Special computer methods
13
065 - Organizations in Italy & adjacent islands
2
150 - Psychology
1
152 - Perception, movement, emotions & drives
1
153 - Mental processes & intelligence
2
158 - Applied psychology
1
300 - Social sciences
11
302 - Social interaction
9
303 - Social processes
2
304 - Factors affecting social behavior
1
330 - Economics
29
331 - Labor economics
17
332 - Financial economics
10
338 - Production
19
368 - Insurance
3
371 - Schools & their activities; special education
1
374 - Adult education
6
380 - Commerce, communications & transportation
7
381 - Commerce
15
384 - Communications; telecommunication
9
500 - Natural sciences & mathematics
3
600 - Technology
1
620 - Engineering & allied operations
2
629 - Other branches of engineering
1
650 - Management & auxiliary services
3
658 - General management
659 - Advertising & public relations
4
670 - Manufacturing
5
745 - Decorative arts
1
794 - Indoor games of skill
1