Classification
000 - Computer science, information & general works
9
001 - Knowledge
1
004 - Data processing & computer science
3
005 - Computer programming, programs & data
4
006 - Special computer methods
1
010 - Bibliography
1
025 - Library operations
1
140 - Specific philosophical schools
5
200 - Religion
3
222 - Historical books of Old Testament
1
230 - Christianity & Christian theology
2
240 - Christian moral & devotional theology
2
260 - Social & ecclesiastical theology
1
261 - Social theology
1
270 - History of Christianity & Christian church
3
280 - Christian denominations & sects
2
297 - Islam, Babism & Bahai Faith
2
299 - Religions not provided for elsewhere
1
300 - Social sciences
6
301 - Sociology & anthropology
5
302 - Social interaction
1
303 - Social processes
1
304 - Factors affecting social behavior
5
305 - Social groups
1
306 - Culture & institutions
3
320 - Political science
16
325 - International migration & colonization
1
327 - International relations
2
330 - Economics
29
331 - Labor economics
3
332 - Financial economics
1
333 - Economics of land & energy
14
338 - Production
3
340 - Law
11
346 - Private law
1
353 - Specific fields of public administration
1
363 - Other social problems & services
9
370 - Education
1
380 - Commerce, communications & transportation
3
390 - Customs, etiquette & folklore
1
393 - Death customs
1
418 - Standard usage & applied linguistics
1
491 - East Indo-European & Celtic languages
1
500 - Natural sciences & mathematics
5
507 - Education, research & related topics
1
510 - Mathematics
3
515 - Analysis
1
516 - Geometry
1
519 - Probabilities & applied mathematics
1
520 - Astronomy & allied sciences
4
more ...