Classification
414 - Phonology & phonetics
700 - The arts; fine & decorative arts
600 - Technology
22
620 - Engineering & allied operations
22
900 - History & geography
17
333 - Economics of land & energy
14
363 - Other social problems & services
9
580 - Plants (Botany)
8
576 - Genetics & evolution
7
000 - Computer science, information & general works
6
610 - Medicine & health
5
380 - Commerce, communications & transportation
4
540 - Chemistry & allied sciences
4
140 - Specific philosophical schools
3
304 - Factors affecting social behavior
3
340 - Law
2
330 - Economics
1
400 - Language
1
410 - Linguistics
1
500 - Natural sciences & mathematics
1
530 - Physics
1
551 - Geology, hydrology & meteorology
1
590 - Animals (Zoology)
1
612 - Human physiology
1
630 - Agriculture & related technologies
1
770 - Photography, photographs & computer art
1