Classification
006 - Special computer methods
604
005 - Computer programming, programs & data
476
745 - Decorative arts
454
000 - Computer science, information & general works
204
500 - Natural sciences & mathematics
139
331 - Labor economics
96
620 - Engineering & allied operations
81
004 - Data processing & computer science
78
384 - Communications; telecommunication
65
302 - Social interaction
59
658 - General management
44
330 - Economics
23
381 - Commerce
17
794 - Indoor games of skill
17
600 - Technology
13
621 - Applied physics
12
374 - Adult education
10
300 - Social sciences
9
320 - Political science
6
530 - Physics
6
025 - Library operations
5
659 - Advertising & public relations
5
670 - Manufacturing
5
770 - Photography, photographs & computer art
5
001 - Knowledge
4
338 - Production
4
610 - Medicine & health
4
333 - Economics of land & energy
3
363 - Other social problems & services
3
551 - Geology, hydrology & meteorology
3
700 - The arts; fine & decorative arts
3
740 - Drawing & decorative arts
3
900 - History & geography
3
011 - Bibliographies
2
120 - Epistemology, causation & humankind
2
350 - Public administration & military science
2
519 - Probabilities & applied mathematics
2
651 - Office services
2
686 - Printing & related activities
2
910 - Geography & travel
2
150 - Psychology
1
301 - Sociology & anthropology
1
306 - Culture & institutions
1
343 - Military, tax, trade & industrial law
1
354 - Administration of economy & environment
1
362 - Social welfare problems & services
1
378 - Higher education
1
380 - Commerce, communications & transportation
1
387 - Water, air & space transportation
1
510 - Mathematics
1
more ...