Classification
000 - Computer science, information & general works
320 - Political science
330 - Economics
153
700 - The arts; fine & decorative arts
150
333 - Economics of land & energy
121
363 - Other social problems & services
102
600 - Technology
89
380 - Commerce, communications & transportation
87
900 - History & geography
68
551 - Geology, hydrology & meteorology
67
300 - Social sciences
54
610 - Medicine & health
48
140 - Specific philosophical schools
44
100 - Philosophy & psychology
38
620 - Engineering & allied operations
38
370 - Education
30
630 - Agriculture & related technologies
30
340 - Law
29
200 - Religion
25
581 - Specific topics in natural history
21
658 - General management
19
576 - Genetics & evolution
17
580 - Plants (Botany)
17
800 - Literature & rhetoric
15
301 - Sociology & anthropology
14
400 - Language
14
500 - Natural sciences & mathematics
14
720 - Architecture
13
170 - Ethics
12
304 - Factors affecting social behavior
12
297 - Islam, Babism & Bahai Faith
10
361 - Social problems & social welfare in general
9
410 - Linguistics
9
530 - Physics
9
540 - Chemistry & allied sciences
9
657 - Accounting
7
414 - Phonology & phonetics
6
550 - Earth sciences
5
120 - Epistemology, causation & humankind
3
520 - Astronomy & allied sciences
3
780 - Music
3
791 - Public performances
3
350 - Public administration & military science
2
360 - Social problems & services; associations
2
770 - Photography, photographs & computer art
2
364 - Criminology
1
612 - Human physiology
1
615 - Pharmacology & therapeutics
1
650 - Management & auxiliary services
1