Classification
001 - Knowledge
1
004 - Data processing & computer science
005 - Computer programming, programs & data
6
006 - Special computer methods
2
020 - Library & information sciences
1
158 - Applied psychology
1
300 - Social sciences
7
302 - Social interaction
8
303 - Social processes
1
330 - Economics
44
331 - Labor economics
180
332 - Financial economics
3
338 - Production
23
371 - Schools & their activities; special education
1
374 - Adult education
27
380 - Commerce, communications & transportation
6
381 - Commerce
9
384 - Communications; telecommunication
77
500 - Natural sciences & mathematics
510 - Mathematics
13
600 - Technology
3
620 - Engineering & allied operations
35
621 - Applied physics
3
650 - Management & auxiliary services
2
658 - General management
125
670 - Manufacturing
5
720 - Architecture
1
741 - Drawing & drawings
1
745 - Decorative arts
56
794 - Indoor games of skill
1
800 - Literature & rhetoric
1
808 - Rhetoric & collections of literature
3