Classification
000 - Computer science, information & general works
330 - Economics
700 - The arts; fine & decorative arts
333 - Economics of land & energy
158
363 - Other social problems & services
130
600 - Technology
119
320 - Political science
74
900 - History & geography
65
620 - Engineering & allied operations
64
610 - Medicine & health
63
380 - Commerce, communications & transportation
59
140 - Specific philosophical schools
57
551 - Geology, hydrology & meteorology
47
580 - Plants (Botany)
40
630 - Agriculture & related technologies
36
658 - General management
35
576 - Genetics & evolution
33
500 - Natural sciences & mathematics
25
370 - Education
21
720 - Architecture
20
340 - Law
19
540 - Chemistry & allied sciences
17
581 - Specific topics in natural history
17
800 - Literature & rhetoric
17
530 - Physics
15
304 - Factors affecting social behavior
14
400 - Language
14
300 - Social sciences
12
100 - Philosophy & psychology
9
414 - Phonology & phonetics
9
410 - Linguistics
8
200 - Religion
6
301 - Sociology & anthropology
6
657 - Accounting
6
361 - Social problems & social welfare in general
5
780 - Music
5
770 - Photography, photographs & computer art
4
170 - Ethics
3
612 - Human physiology
3
160 - Logic
2
297 - Islam, Babism & Bahai Faith
2
520 - Astronomy & allied sciences
2
550 - Earth sciences
2
791 - Public performances
2
120 - Epistemology, causation & humankind
1
338 - Production
1
350 - Public administration & military science
1
374 - Adult education
1
615 - Pharmacology & therapeutics
1