Classification
500 - Natural sciences & mathematics
104
025 - Library operations
71
658 - General management
47
331 - Labor economics
19
005 - Computer programming, programs & data
16
302 - Social interaction
13
338 - Production
12
300 - Social sciences
10
384 - Communications; telecommunication
10
020 - Library & information sciences
9
620 - Engineering & allied operations
9
000 - Computer science, information & general works
8
006 - Special computer methods
8
004 - Data processing & computer science
7
330 - Economics
7
745 - Decorative arts
7
519 - Probabilities & applied mathematics
6
028 - Reading & use of other information media
5
381 - Commerce
5
001 - Knowledge
4
027 - General libraries
3
374 - Adult education
3
650 - Management & auxiliary services
3
023 - Personnel management
2
670 - Manufacturing
2
021 - Library relationships
1
303 - Social processes
1
380 - Commerce, communications & transportation
1
510 - Mathematics
1
600 - Technology
1
659 - Advertising & public relations
1
727 - Buildings for education & research
1
770 - Photography, photographs & computer art
1
794 - Indoor games of skill
1