Classification
001 - Knowledge
45
003 - Systems
4
004 - Data processing & computer science
3
005 - Computer programming, programs & data
6
006 - Special computer methods
20
050 - General serial publications
8
100 - Philosophy & psychology
1
150 - Psychology
1
158 - Applied psychology
2
300 - Social sciences
49
301 - Sociology & anthropology
7
304 - Factors affecting social behavior
1
305 - Social groups
1
306 - Culture & institutions
4
307 - Communities
1
320 - Political science
3
327 - International relations
2
330 - Economics
2
333 - Economics of land & energy
76
337 - International economics
1
338 - Production
2
340 - Law
2
344 - Labor, social, education & cultural law
4
363 - Other social problems & services
58
418 - Standard usage & applied linguistics
1
500 - Natural sciences & mathematics
15
501 - Philosophy & theory
9
509 - Historical, geographic & persons treatment
1
510 - Mathematics
1
515 - Analysis
6
518 - Numerical analysis
2
519 - Probabilities & applied mathematics
29
520 - Astronomy & allied sciences
20
523 - Specific celestial bodies & phenomena
14
526 - Mathematical geography
26
530 - Physics
16
531 - Classical mechanics; solid mechanics
25
532 - Fluid mechanics; liquid mechanics
3
533 - Gas mechanics
3
534 - Sound & related vibrations
1
536 - Heat
5
538 - Magnetism
5
539 - Modern physics
3
540 - Chemistry & allied sciences
5
541 - Physical chemistry
34
543 - Analytical chemistry
9
546 - Inorganic chemistry
7
548 - Crystallography
5
549 - Mineralogy
92
550 - Earth sciences
132
more ...