Classification
000 - Computer science, information & general works
73
006 - Special computer methods
1
100 - Philosophy & psychology
3
120 - Epistemology, causation & humankind
2
140 - Specific philosophical schools
8
300 - Social sciences
1
301 - Sociology & anthropology
2
304 - Factors affecting social behavior
2
320 - Political science
5
330 - Economics
7
331 - Labor economics
2
333 - Economics of land & energy
81
340 - Law
10
363 - Other social problems & services
14
370 - Education
8
380 - Commerce, communications & transportation
13
400 - Language
3
414 - Phonology & phonetics
4
500 - Natural sciences & mathematics
41
510 - Mathematics
5
519 - Probabilities & applied mathematics
2
520 - Astronomy & allied sciences
4
530 - Physics
539 - Modern physics
2
540 - Chemistry & allied sciences
7
550 - Earth sciences
1
551 - Geology, hydrology & meteorology
4
576 - Genetics & evolution
17
580 - Plants (Botany)
7
581 - Specific topics in natural history
1
600 - Technology
33
610 - Medicine & health
13
620 - Engineering & allied operations
33
630 - Agriculture & related technologies
3
650 - Management & auxiliary services
1
658 - General management
5
700 - The arts; fine & decorative arts
84
720 - Architecture
2
745 - Decorative arts
1
791 - Public performances
1
800 - Literature & rhetoric
3
900 - History & geography
21