Classification
000 - Computer science, information & general works
25
001 - Knowledge
13
003 - Systems
15
004 - Data processing & computer science
11
005 - Computer programming, programs & data
1
006 - Special computer methods
50
025 - Library operations
1
050 - General serial publications
5
057 - Serials in Slavic languages
1
061 - Organizations in North America
2
100 - Philosophy & psychology
1
109 - Historical & collected persons treatment
1
140 - Specific philosophical schools
6
150 - Psychology
1
155 - Differential & developmental psychology
2
300 - Social sciences
12
301 - Sociology & anthropology
6
302 - Social interaction
1
304 - Factors affecting social behavior
10
306 - Culture & institutions
1
307 - Communities
1
320 - Political science
5
325 - International migration & colonization
1
327 - International relations
1
330 - Economics
30
332 - Financial economics
1
333 - Economics of land & energy
69
337 - International economics
1
338 - Production
7
340 - Law
2
344 - Labor, social, education & cultural law
1
362 - Social welfare problems & services
1
363 - Other social problems & services
30
370 - Education
2
380 - Commerce, communications & transportation
8
381 - Commerce
1
400 - Language
1
401 - Philosophy & theory
2
410 - Linguistics
1
414 - Phonology & phonetics
2
500 - Natural sciences & mathematics
69
501 - Philosophy & theory
1
502 - Miscellany
4
507 - Education, research & related topics
1
510 - Mathematics
3
514 - Topology
1
515 - Analysis
8
516 - Geometry
1
518 - Numerical analysis
3
519 - Probabilities & applied mathematics
9
more ...