Classification
510 - Mathematics
6
519 - Probabilities & applied mathematics
5
658 - General management
4
006 - Special computer methods
3
330 - Economics
3
500 - Natural sciences & mathematics
3
515 - Analysis
3
516 - Geometry
3
620 - Engineering & allied operations
3
305 - Social groups
2
332 - Financial economics
2
530 - Physics
2
551 - Geology, hydrology & meteorology
2
809 - History, description & criticism
2
900 - History & geography
2
100 - Philosophy & psychology
1
111 - Ontology
1
301 - Sociology & anthropology
1
302 - Social interaction
1
320 - Political science
1
333 - Economics of land & energy
1
339 - Macroeconomics & related topics
1
341 - Law of nations
1
343 - Military, tax, trade & industrial law
1
344 - Labor, social, education & cultural law
1
347 - Civil procedure & courts
1
363 - Other social problems & services
1
407 - Education, research & related topics
1
418 - Standard usage & applied linguistics
1
501 - Philosophy & theory
1
512 - Algebra
1
518 - Numerical analysis
1
539 - Modern physics
1
542 - Techniques, equipment & materials
1
570 - Life sciences; biology
1
571 - Physiology & related subjects
1
577 - Ecology
1
612 - Human physiology
1
613 - Personal health & safety
1
629 - Other branches of engineering
1
650 - Management & auxiliary services
1
838 - German miscellaneous writings
1
909 - World history
1
936 - Europe north & west of Italy to ca. 499
1