Classification
331 - Labor economics
28
000 - Computer science, information & general works
27
006 - Special computer methods
27
004 - Data processing & computer science
26
302 - Social interaction
26
658 - General management
20
381 - Commerce
19
500 - Natural sciences & mathematics
17
005 - Computer programming, programs & data
15
330 - Economics
12
384 - Communications; telecommunication
8
620 - Engineering & allied operations
7
338 - Production
6
025 - Library operations
4
332 - Financial economics
4
781 - General principles & musical forms
4
659 - Advertising & public relations
3
621 - Applied physics
2
745 - Decorative arts
2
770 - Photography, photographs & computer art
2
780 - Music
2
030 - General encyclopedic works
1
300 - Social sciences
1
303 - Social processes
1
368 - Insurance
1
374 - Adult education
1
510 - Mathematics
1
519 - Probabilities & applied mathematics
1
600 - Technology
1
643 - Housing & household equipment
1
670 - Manufacturing
1
775 - Digital photography
1
808 - Rhetoric & collections of literature
1