Classification
000 - Computer science, information & general works
48
100 - Philosophy & psychology
12
120 - Epistemology, causation & humankind
1
140 - Specific philosophical schools
27
158 - Applied psychology
4
160 - Logic
1
170 - Ethics
3
200 - Religion
3
297 - Islam, Babism & Bahai Faith
1
300 - Social sciences
19
301 - Sociology & anthropology
3
304 - Factors affecting social behavior
19
305 - Social groups
9
306 - Culture & institutions
5
307 - Communities
1
320 - Political science
226
321 - Systems of governments & states
1
330 - Economics
7,831
331 - Labor economics
27
332 - Financial economics
85
333 - Economics of land & energy
69
336 - Public finance
21
337 - International economics
1
338 - Production
16
339 - Macroeconomics & related topics
92
340 - Law
194
343 - Military, tax, trade & industrial law
25
344 - Labor, social, education & cultural law
2
346 - Private law
1
350 - Public administration & military science
1
360 - Social problems & services; associations
4
361 - Social problems & social welfare in general
19
362 - Social welfare problems & services
7
363 - Other social problems & services
31
364 - Criminology
2
368 - Insurance
12
370 - Education
24
371 - Schools & their activities; special education
1
374 - Adult education
1
379 - Public policy issues in education
1
380 - Commerce, communications & transportation
41
381 - Commerce
2
400 - Language
6
410 - Linguistics
3
500 - Natural sciences & mathematics
8
510 - Mathematics
2
520 - Astronomy & allied sciences
2
530 - Physics
2
540 - Chemistry & allied sciences
1
550 - Earth sciences
1
more ...