Classification
370 - Education
700 - The arts; fine & decorative arts
333 - Economics of land & energy
145
900 - History & geography
113
600 - Technology
108
100 - Philosophy & psychology
101
320 - Political science
101
610 - Medicine & health
99
330 - Economics
87
000 - Computer science, information & general works
83
363 - Other social problems & services
78
380 - Commerce, communications & transportation
68
140 - Specific philosophical schools
66
300 - Social sciences
64
400 - Language
64
620 - Engineering & allied operations
55
780 - Music
40
720 - Architecture
32
340 - Law
29
304 - Factors affecting social behavior
24
200 - Religion
23
410 - Linguistics
23
551 - Geology, hydrology & meteorology
22
301 - Sociology & anthropology
21
500 - Natural sciences & mathematics
21
576 - Genetics & evolution
17
170 - Ethics
16
800 - Literature & rhetoric
16
580 - Plants (Botany)
15
658 - General management
15
530 - Physics
11
630 - Agriculture & related technologies
11
770 - Photography, photographs & computer art
10
581 - Specific topics in natural history
9
297 - Islam, Babism & Bahai Faith
7
540 - Chemistry & allied sciences
7
361 - Social problems & social welfare in general
6
120 - Epistemology, causation & humankind
4
414 - Phonology & phonetics
4
791 - Public performances
4
160 - Logic
3
360 - Social problems & services; associations
3
612 - Human physiology
3
296 - Judaism
2
520 - Astronomy & allied sciences
2
615 - Pharmacology & therapeutics
2
230 - Christianity & Christian theology
1
364 - Criminology
1
550 - Earth sciences
1
657 - Accounting
1
more ...