Classification
340 - Law
700 - The arts; fine & decorative arts
320 - Political science
251
330 - Economics
192
900 - History & geography
122
600 - Technology
83
333 - Economics of land & energy
76
000 - Computer science, information & general works
64
620 - Engineering & allied operations
54
140 - Specific philosophical schools
53
363 - Other social problems & services
48
380 - Commerce, communications & transportation
38
610 - Medicine & health
35
100 - Philosophy & psychology
34
500 - Natural sciences & mathematics
31
300 - Social sciences
29
576 - Genetics & evolution
28
370 - Education
24
170 - Ethics
23
400 - Language
20
530 - Physics
20
800 - Literature & rhetoric
20
580 - Plants (Botany)
18
200 - Religion
17
551 - Geology, hydrology & meteorology
15
720 - Architecture
14
630 - Agriculture & related technologies
13
410 - Linguistics
12
658 - General management
11
304 - Factors affecting social behavior
10
414 - Phonology & phonetics
7
581 - Specific topics in natural history
7
301 - Sociology & anthropology
6
780 - Music
5
120 - Epistemology, causation & humankind
4
297 - Islam, Babism & Bahai Faith
4
540 - Chemistry & allied sciences
4
770 - Photography, photographs & computer art
4
791 - Public performances
4
350 - Public administration & military science
3
361 - Social problems & social welfare in general
3
491 - East Indo-European & Celtic languages
3
364 - Criminology
2
612 - Human physiology
2
160 - Logic
1
230 - Christianity & Christian theology
1
337 - International economics
1
342 - Constitutional & administrative law
1
344 - Labor, social, education & cultural law
1
394 - General customs
1
more ...