Classification
000 - Computer science, information & general works
18
003 - Systems
2
004 - Data processing & computer science
1
005 - Computer programming, programs & data
1
006 - Special computer methods
1
140 - Specific philosophical schools
1
297 - Islam, Babism & Bahai Faith
1
300 - Social sciences
1
304 - Factors affecting social behavior
3
320 - Political science
1
330 - Economics
1
333 - Economics of land & energy
33
363 - Other social problems & services
33
370 - Education
2
380 - Commerce, communications & transportation
3
400 - Language
1
410 - Linguistics
1
500 - Natural sciences & mathematics
21
501 - Philosophy & theory
3
507 - Education, research & related topics
1
509 - Historical, geographic & persons treatment
1
510 - Mathematics
2
511 - General principles of mathematics
1
515 - Analysis
2
518 - Numerical analysis
2
519 - Probabilities & applied mathematics
6
520 - Astronomy & allied sciences
10
523 - Specific celestial bodies & phenomena
3
530 - Physics
288
531 - Classical mechanics; solid mechanics
18
532 - Fluid mechanics; liquid mechanics
2
533 - Gas mechanics
2
534 - Sound & related vibrations
6
535 - Light & infrared & ultraviolet phenomena
5
536 - Heat
69
537 - Electricity & electronics
16
538 - Magnetism
7
539 - Modern physics
109
540 - Chemistry & allied sciences
82
541 - Physical chemistry
1,413
542 - Techniques, equipment & materials
7
543 - Analytical chemistry
156
546 - Inorganic chemistry
122
547 - Organic chemistry
132
548 - Crystallography
23
549 - Mineralogy
21
550 - Earth sciences
1
551 - Geology, hydrology & meteorology
32
553 - Economic geology
1
570 - Life sciences; biology
4
more ...