Classification
000 - Computer science, information & general works
20
100 - Philosophy & psychology
2
133 - Specific topics in parapsychology & occultism
1
140 - Specific philosophical schools
12
170 - Ethics
3
200 - Religion
8
270 - History of Christianity & Christian church
2
271 - Religious orders in church history
1
280 - Christian denominations & sects
3
282 - Roman Catholic Church
1
296 - Judaism
2
297 - Islam, Babism & Bahai Faith
5
300 - Social sciences
21
301 - Sociology & anthropology
7
302 - Social interaction
1
304 - Factors affecting social behavior
36
305 - Social groups
3
307 - Communities
1
320 - Political science
129
322 - Relation of state to organized groups
2
325 - International migration & colonization
1
330 - Economics
200
331 - Labor economics
2
332 - Financial economics
3
333 - Economics of land & energy
77
336 - Public finance
7
337 - International economics
1
338 - Production
5
339 - Macroeconomics & related topics
1
340 - Law
30
342 - Constitutional & administrative law
1
347 - Civil procedure & courts
2
350 - Public administration & military science
1
352 - General considerations of public administration
1
361 - Social problems & social welfare in general
4
362 - Social welfare problems & services
1
363 - Other social problems & services
31
364 - Criminology
2
370 - Education
36
380 - Commerce, communications & transportation
14
398 - Folklore
1
400 - Language
8
410 - Linguistics
5
414 - Phonology & phonetics
2
500 - Natural sciences & mathematics
2
530 - Physics
1
540 - Chemistry & allied sciences
2
550 - Earth sciences
1
551 - Geology, hydrology & meteorology
11
576 - Genetics & evolution
8
more ...