Classification
600 - Technology
700 - The arts; fine & decorative arts
900 - History & geography
620 - Engineering & allied operations
836
333 - Economics of land & energy
403
380 - Commerce, communications & transportation
185
363 - Other social problems & services
180
000 - Computer science, information & general works
161
330 - Economics
159
610 - Medicine & health
130
580 - Plants (Botany)
111
576 - Genetics & evolution
91
140 - Specific philosophical schools
90
720 - Architecture
66
320 - Political science
55
500 - Natural sciences & mathematics
53
340 - Law
48
630 - Agriculture & related technologies
44
370 - Education
43
551 - Geology, hydrology & meteorology
41
414 - Phonology & phonetics
36
800 - Literature & rhetoric
35
100 - Philosophy & psychology
26
530 - Physics
24
540 - Chemistry & allied sciences
24
300 - Social sciences
23
658 - General management
23
400 - Language
19
581 - Specific topics in natural history
19
780 - Music
13
770 - Photography, photographs & computer art
11
304 - Factors affecting social behavior
10
170 - Ethics
8
301 - Sociology & anthropology
8
410 - Linguistics
8
200 - Religion
7
612 - Human physiology
7
361 - Social problems & social welfare in general
5
120 - Epistemology, causation & humankind
2
160 - Logic
2
657 - Accounting
2
336 - Public finance
1
360 - Social problems & services; associations
1
398 - Folklore
1
550 - Earth sciences
1
615 - Pharmacology & therapeutics
1
650 - Management & auxiliary services
1
791 - Public performances
1