Classification
414 - Phonology & phonetics
576 - Genetics & evolution
600 - Technology
620 - Engineering & allied operations
14
900 - History & geography
12
700 - The arts; fine & decorative arts
9
333 - Economics of land & energy
6
363 - Other social problems & services
5
580 - Plants (Botany)
4
340 - Law
3
330 - Economics
2
400 - Language
2
000 - Computer science, information & general works
1
304 - Factors affecting social behavior
1
380 - Commerce, communications & transportation
1
530 - Physics
1
540 - Chemistry & allied sciences
1
550 - Earth sciences
1
551 - Geology, hydrology & meteorology
1
610 - Medicine & health
1
658 - General management
1
720 - Architecture
1
800 - Literature & rhetoric
1