Classification
363 - Other social problems & services
400 - Language
330 - Economics
4
333 - Economics of land & energy
4
600 - Technology
3
620 - Engineering & allied operations
3
700 - The arts; fine & decorative arts
3
900 - History & geography
3
140 - Specific philosophical schools
2
300 - Social sciences
2
320 - Political science
2
340 - Law
2
370 - Education
2
410 - Linguistics
2
000 - Computer science, information & general works
1
100 - Philosophy & psychology
1
120 - Epistemology, causation & humankind
1
200 - Religion
1
301 - Sociology & anthropology
1
380 - Commerce, communications & transportation
1
500 - Natural sciences & mathematics
1
551 - Geology, hydrology & meteorology
1
576 - Genetics & evolution
1
580 - Plants (Botany)
1
610 - Medicine & health
1
800 - Literature & rhetoric
1