Classification
330 - Economics
269
320 - Political science
119
230 - Christianity & Christian theology
85
658 - General management
47
340 - Law
37
700 - The arts; fine & decorative arts
35
900 - History & geography
32
170 - Ethics
29
333 - Economics of land & energy
29
363 - Other social problems & services
28
000 - Computer science, information & general works
27
100 - Philosophy & psychology
27
300 - Social sciences
25
600 - Technology
23
140 - Specific philosophical schools
22
620 - Engineering & allied operations
22
370 - Education
21
380 - Commerce, communications & transportation
19
610 - Medicine & health
17
820 - English & Old English literatures
16
381 - Commerce
15
500 - Natural sciences & mathematics
15
200 - Religion
13
260 - Social & ecclesiastical theology
13
338 - Production
11
120 - Epistemology, causation & humankind
10
551 - Geology, hydrology & meteorology
10
670 - Manufacturing
10
630 - Agriculture & related technologies
8
650 - Management & auxiliary services
8
240 - Christian moral & devotional theology
7
304 - Factors affecting social behavior
7
332 - Financial economics
7
580 - Plants (Botany)
7
231 - God
6
302 - Social interaction
6
400 - Language
6
220 - Bible
5
301 - Sociology & anthropology
5
576 - Genetics & evolution
5
581 - Specific topics in natural history
5
604 - Special topics
5
336 - Public finance
4
530 - Physics
4
800 - Literature & rhetoric
4
910 - Geography & travel
4
250 - Christian orders & local church
3
303 - Social processes
3
331 - Labor economics
3
615 - Pharmacology & therapeutics
3
more ...