Classification
330 - Economics
785
320 - Political science
502
340 - Law
433
820 - English & Old English literatures
389
900 - History & geography
155
700 - The arts; fine & decorative arts
86
333 - Economics of land & energy
80
000 - Computer science, information & general works
72
300 - Social sciences
58
600 - Technology
51
140 - Specific philosophical schools
48
610 - Medicine & health
46
363 - Other social problems & services
45
620 - Engineering & allied operations
42
380 - Commerce, communications & transportation
39
100 - Philosophy & psychology
32
580 - Plants (Botany)
31
630 - Agriculture & related technologies
30
581 - Specific topics in natural history
24
500 - Natural sciences & mathematics
22
551 - Geology, hydrology & meteorology
22
346 - Private law
20
370 - Education
20
576 - Genetics & evolution
18
940 - History of Europe
15
658 - General management
13
170 - Ethics
12
400 - Language
11
200 - Religion
10
540 - Chemistry & allied sciences
10
005 - Computer programming, programs & data
9
800 - Literature & rhetoric
9
304 - Factors affecting social behavior
8
414 - Phonology & phonetics
8
120 - Epistemology, causation & humankind
7
260 - Social & ecclesiastical theology
7
280 - Christian denominations & sects
7
410 - Linguistics
7
720 - Architecture
7
250 - Christian orders & local church
6
530 - Physics
6
230 - Christianity & Christian theology
5
301 - Sociology & anthropology
5
338 - Production
5
343 - Military, tax, trade & industrial law
5
361 - Social problems & social welfare in general
5
612 - Human physiology
5
305 - Social groups
4
331 - Labor economics
4
342 - Constitutional & administrative law
4
more ...