Classification
003 - Systems
112
004 - Data processing & computer science
33
005 - Computer programming, programs & data
25
006 - Special computer methods
30
070 - News media, journalism & publishing
2
150 - Psychology
1
155 - Differential & developmental psychology
3
158 - Applied psychology
17
160 - Logic
1
300 - Social sciences
1
301 - Sociology & anthropology
2
302 - Social interaction
1
304 - Factors affecting social behavior
3
306 - Culture & institutions
3
320 - Political science
25
327 - International relations
9
330 - Economics
28
331 - Labor economics
2
332 - Financial economics
12
333 - Economics of land & energy
16
336 - Public finance
2
337 - International economics
7
338 - Production
159
339 - Macroeconomics & related topics
1
341 - Law of nations
2
343 - Military, tax, trade & industrial law
1
344 - Labor, social, education & cultural law
1
351 - Public administration
1
361 - Social problems & social welfare in general
2
362 - Social welfare problems & services
1
363 - Other social problems & services
28
381 - Commerce
2
418 - Standard usage & applied linguistics
1
501 - Philosophy & theory
1
510 - Mathematics
2
511 - General principles of mathematics
4
512 - Algebra
7
514 - Topology
1
515 - Analysis
32
516 - Geometry
2
518 - Numerical analysis
14
519 - Probabilities & applied mathematics
62
520 - Astronomy & allied sciences
1
530 - Physics
22
531 - Classical mechanics; solid mechanics
23
532 - Fluid mechanics; liquid mechanics
1
533 - Gas mechanics
1
534 - Sound & related vibrations
3
535 - Light & infrared & ultraviolet phenomena
1
536 - Heat
15
more ...