Classification
700 - The arts; fine & decorative arts
900 - History & geography
600 - Technology
903
620 - Engineering & allied operations
834
333 - Economics of land & energy
406
380 - Commerce, communications & transportation
186
363 - Other social problems & services
185
000 - Computer science, information & general works
169
330 - Economics
165
610 - Medicine & health
130
580 - Plants (Botany)
110
140 - Specific philosophical schools
93
576 - Genetics & evolution
91
720 - Architecture
68
320 - Political science
60
500 - Natural sciences & mathematics
53
340 - Law
48
370 - Education
46
630 - Agriculture & related technologies
45
551 - Geology, hydrology & meteorology
43
414 - Phonology & phonetics
37
800 - Literature & rhetoric
37
100 - Philosophy & psychology
27
530 - Physics
25
540 - Chemistry & allied sciences
25
300 - Social sciences
23
658 - General management
23
400 - Language
21
581 - Specific topics in natural history
20
780 - Music
13
770 - Photography, photographs & computer art
12
304 - Factors affecting social behavior
10
410 - Linguistics
10
301 - Sociology & anthropology
9
170 - Ethics
8
200 - Religion
8
160 - Logic
5
361 - Social problems & social welfare in general
5
612 - Human physiology
5
120 - Epistemology, causation & humankind
2
360 - Social problems & services; associations
2
657 - Accounting
2
336 - Public finance
1
398 - Folklore
1
520 - Astronomy & allied sciences
1
550 - Earth sciences
1
615 - Pharmacology & therapeutics
1
650 - Management & auxiliary services
1
791 - Public performances
1