Classification
700 - The arts; fine & decorative arts
69
900 - History & geography
43
526 - Mathematical geography
32
910 - Geography & travel
28
004 - Data processing & computer science
20
520 - Astronomy & allied sciences
17
000 - Computer science, information & general works
14
140 - Specific philosophical schools
14
620 - Engineering & allied operations
14
320 - Political science
12
550 - Earth sciences
12
551 - Geology, hydrology & meteorology
11
500 - Natural sciences & mathematics
9
600 - Technology
9
363 - Other social problems & services
8
380 - Commerce, communications & transportation
8
005 - Computer programming, programs & data
7
301 - Sociology & anthropology
7
330 - Economics
7
300 - Social sciences
6
414 - Phonology & phonetics
6
200 - Religion
5
304 - Factors affecting social behavior
4
333 - Economics of land & energy
4
370 - Education
4
800 - Literature & rhetoric
4
302 - Social interaction
3
629 - Other branches of engineering
3
720 - Architecture
3
745 - Decorative arts
3
912 - Atlases, maps, charts & plans
3
006 - Special computer methods
2
100 - Philosophy & psychology
2
306 - Culture & institutions
2
307 - Communities
2
331 - Labor economics
2
410 - Linguistics
2
510 - Mathematics
2
519 - Probabilities & applied mathematics
2
523 - Specific celestial bodies & phenomena
2
580 - Plants (Botany)
2
581 - Specific topics in natural history
2
610 - Medicine & health
2
621 - Applied physics
2
630 - Agriculture & related technologies
2
658 - General management
2
741 - Drawing & drawings
2
170 - Ethics
1
190 - Modern western philosophy
1
303 - Social processes
1
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