Classification
000 - Computer science, information & general works
72
006 - Special computer methods
69
005 - Computer programming, programs & data
54
658 - General management
53
330 - Economics
51
500 - Natural sciences & mathematics
51
620 - Engineering & allied operations
51
700 - The arts; fine & decorative arts
44
381 - Commerce
37
004 - Data processing & computer science
34
331 - Labor economics
31
302 - Social interaction
27
025 - Library operations
26
600 - Technology
24
363 - Other social problems & services
20
333 - Economics of land & energy
19
659 - Advertising & public relations
17
551 - Geology, hydrology & meteorology
15
745 - Decorative arts
15
900 - History & geography
15
380 - Commerce, communications & transportation
13
300 - Social sciences
12
580 - Plants (Botany)
12
384 - Communications; telecommunication
11
610 - Medicine & health
11
519 - Probabilities & applied mathematics
10
140 - Specific philosophical schools
9
320 - Political science
9
340 - Law
8
630 - Agriculture & related technologies
6
800 - Literature & rhetoric
6
910 - Geography & travel
6
338 - Production
5
374 - Adult education
5
576 - Genetics & evolution
5
621 - Applied physics
5
670 - Manufacturing
5
303 - Social processes
4
770 - Photography, photographs & computer art
4
370 - Education
3
581 - Specific topics in natural history
3
720 - Architecture
3
170 - Ethics
2
332 - Financial economics
2
414 - Phonology & phonetics
2
510 - Mathematics
2
550 - Earth sciences
2
011 - Bibliographies
1
153 - Mental processes & intelligence
1
158 - Applied psychology
1
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