Classification
000 - Computer science, information & general works
2
001 - Knowledge
4
003 - Systems
1
004 - Data processing & computer science
2
005 - Computer programming, programs & data
3
006 - Special computer methods
4
050 - General serial publications
1
230 - Christianity & Christian theology
1
300 - Social sciences
19
301 - Sociology & anthropology
3
303 - Social processes
1
304 - Factors affecting social behavior
7
305 - Social groups
1
306 - Culture & institutions
1
320 - Political science
76
327 - International relations
1
330 - Economics
98
331 - Labor economics
3
332 - Financial economics
1
333 - Economics of land & energy
16
337 - International economics
1
338 - Production
8
339 - Macroeconomics & related topics
1
340 - Law
27
344 - Labor, social, education & cultural law
1
360 - Social problems & services; associations
1
361 - Social problems & social welfare in general
1
363 - Other social problems & services
3
370 - Education
1
380 - Commerce, communications & transportation
2
381 - Commerce
1
390 - Customs, etiquette & folklore
1
414 - Phonology & phonetics
1
515 - Analysis
1
519 - Probabilities & applied mathematics
1
520 - Astronomy & allied sciences
1
530 - Physics
2
540 - Chemistry & allied sciences
1
550 - Earth sciences
2
551 - Geology, hydrology & meteorology
6
560 - Paleontology; paleozoology
1
570 - Life sciences; biology
4
571 - Physiology & related subjects
3
577 - Ecology
9
579 - Microorganisms, fungi & algae
1
580 - Plants (Botany)
7
581 - Specific topics in natural history
2
590 - Animals (Zoology)
1
592 - Invertebrates
3
595 - Arthropods
1
more ...