Classification
600 - Technology
13
700 - The arts; fine & decorative arts
13
000 - Computer science, information & general works
7
540 - Chemistry & allied sciences
6
610 - Medicine & health
6
363 - Other social problems & services
5
620 - Engineering & allied operations
5
333 - Economics of land & energy
4
330 - Economics
3
576 - Genetics & evolution
3
580 - Plants (Botany)
3
140 - Specific philosophical schools
1
380 - Commerce, communications & transportation
1
400 - Language
1
410 - Linguistics
1
414 - Phonology & phonetics
1
543 - Analytical chemistry
1
628 - Sanitary & municipal engineering
1
800 - Literature & rhetoric
1
900 - History & geography
1