Classification
340 - Law
700 - The arts; fine & decorative arts
320 - Political science
269
330 - Economics
235
370 - Education
143
900 - History & geography
134
333 - Economics of land & energy
96
600 - Technology
87
000 - Computer science, information & general works
66
140 - Specific philosophical schools
56
363 - Other social problems & services
56
620 - Engineering & allied operations
54
100 - Philosophy & psychology
53
380 - Commerce, communications & transportation
50
610 - Medicine & health
39
300 - Social sciences
36
500 - Natural sciences & mathematics
32
170 - Ethics
30
576 - Genetics & evolution
28
200 - Religion
23
400 - Language
22
530 - Physics
21
580 - Plants (Botany)
20
800 - Literature & rhetoric
20
720 - Architecture
16
551 - Geology, hydrology & meteorology
15
410 - Linguistics
13
630 - Agriculture & related technologies
13
304 - Factors affecting social behavior
12
658 - General management
12
301 - Sociology & anthropology
10
297 - Islam, Babism & Bahai Faith
7
414 - Phonology & phonetics
7
581 - Specific topics in natural history
7
361 - Social problems & social welfare in general
6
780 - Music
6
350 - Public administration & military science
5
120 - Epistemology, causation & humankind
4
540 - Chemistry & allied sciences
4
770 - Photography, photographs & computer art
4
791 - Public performances
4
364 - Criminology
3
491 - East Indo-European & Celtic languages
3
612 - Human physiology
2
657 - Accounting
2
160 - Logic
1
230 - Christianity & Christian theology
1
296 - Judaism
1
336 - Public finance
1
337 - International economics
1
more ...