Classification
700 - The arts; fine & decorative arts
600 - Technology
234
620 - Engineering & allied operations
179
900 - History & geography
175
333 - Economics of land & energy
171
000 - Computer science, information & general works
166
610 - Medicine & health
115
363 - Other social problems & services
86
330 - Economics
81
380 - Commerce, communications & transportation
78
140 - Specific philosophical schools
60
580 - Plants (Botany)
53
576 - Genetics & evolution
52
500 - Natural sciences & mathematics
36
370 - Education
33
530 - Physics
33
340 - Law
31
320 - Political science
30
551 - Geology, hydrology & meteorology
28
630 - Agriculture & related technologies
22
414 - Phonology & phonetics
20
720 - Architecture
20
540 - Chemistry & allied sciences
19
100 - Philosophy & psychology
16
400 - Language
15
410 - Linguistics
15
800 - Literature & rhetoric
12
658 - General management
11
612 - Human physiology
8
581 - Specific topics in natural history
7
304 - Factors affecting social behavior
5
780 - Music
5
170 - Ethics
4
770 - Photography, photographs & computer art
4
200 - Religion
3
650 - Management & auxiliary services
3
160 - Logic
2
301 - Sociology & anthropology
2
657 - Accounting
2
120 - Epistemology, causation & humankind
1
300 - Social sciences
1
350 - Public administration & military science
1
520 - Astronomy & allied sciences
1
550 - Earth sciences
1
615 - Pharmacology & therapeutics
1